Template helpers refactoring

129 files changed, 783 insertions, 783 deletions

diff --git a/app/Template/action/event.php b/app/Template/action/event.php
index 565e900c..67a65c19 100644
--- a/app/Template/action/event.php
+++ b/app/Template/action/event.php
@@ -3,15 +3,15 @@
 </div>
 
 <h3><?= t('Choose an event') ?></h3>
-<form method="post" action="<?= Helper\u('action', 'params', array('project_id' => $project['id'])) ?>">
+<form method="post" action="<?= $this->u('action', 'params', array('project_id' => $project['id'])) ?>">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('project_id', $values) ?>
-    <?= Helper\form_hidden('action_name', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
+    <?= $this->formHidden('action_name', $values) ?>
 
-    <?= Helper\form_label(t('Event'), 'event_name') ?>
-    <?= Helper\form_select('event_name', $events, $values) ?><br/>
+    <?= $this->formLabel(t('Event'), 'event_name') ?>
+    <?= $this->formSelect('event_name', $events, $values) ?><br/>
 
     <div class="form-help">
         <?= t('When the selected event occurs execute the corresponding action.') ?>
@@ -20,6 +20,6 @@
     <div class="form-actions">
         <input type="submit" value="<?= t('Next step') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'action', 'index', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('cancel'), 'action', 'index', array('project_id' => $project['id'])) ?>
     </div>
 </form>
\ No newline at end of file
diff --git a/app/Template/action/index.php b/app/Template/action/index.php
index 54f13691..e388fbc9 100644
--- a/app/Template/action/index.php
+++ b/app/Template/action/index.php
@@ -15,26 +15,26 @@
 
     <?php foreach ($actions as $action): ?>
     <tr>
-        <td><?= Helper\in_list($action['event_name'], $available_events) ?></td>
-        <td><?= Helper\in_list($action['action_name'], $available_actions) ?></td>
+        <td><?= $this->inList($action['event_name'], $available_events) ?></td>
+        <td><?= $this->inList($action['action_name'], $available_actions) ?></td>
         <td>
             <ul>
             <?php foreach ($action['params'] as $param): ?>
                 <li>
-                    <?= Helper\in_list($param['name'], $available_params) ?> =
+                    <?= $this->inList($param['name'], $available_params) ?> =
                     <strong>
-                    <?php if (Helper\contains($param['name'], 'column_id')): ?>
-                        <?= Helper\in_list($param['value'], $columns_list) ?>
-                    <?php elseif (Helper\contains($param['name'], 'user_id')): ?>
-                        <?= Helper\in_list($param['value'], $users_list) ?>
-                    <?php elseif (Helper\contains($param['name'], 'project_id')): ?>
-                        <?= Helper\in_list($param['value'], $projects_list) ?>
-                    <?php elseif (Helper\contains($param['name'], 'color_id')): ?>
-                        <?= Helper\in_list($param['value'], $colors_list) ?>
-                    <?php elseif (Helper\contains($param['name'], 'category_id')): ?>
-                        <?= Helper\in_list($param['value'], $categories_list) ?>
-                    <?php elseif (Helper\contains($param['name'], 'label')): ?>
-                        <?= Helper\escape($param['value']) ?>
+                    <?php if ($this->contains($param['name'], 'column_id')): ?>
+                        <?= $this->inList($param['value'], $columns_list) ?>
+                    <?php elseif ($this->contains($param['name'], 'user_id')): ?>
+                        <?= $this->inList($param['value'], $users_list) ?>
+                    <?php elseif ($this->contains($param['name'], 'project_id')): ?>
+                        <?= $this->inList($param['value'], $projects_list) ?>
+                    <?php elseif ($this->contains($param['name'], 'color_id')): ?>
+                        <?= $this->inList($param['value'], $colors_list) ?>
+                    <?php elseif ($this->contains($param['name'], 'category_id')): ?>
+                        <?= $this->inList($param['value'], $categories_list) ?>
+                    <?php elseif ($this->contains($param['name'], 'label')): ?>
+                        <?= $this->e($param['value']) ?>
                     <?php endif ?>
                     </strong>
                 </li>
@@ -42,7 +42,7 @@
             </ul>
         </td>
         <td>
-            <?= Helper\a(t('Remove'), 'action', 'confirm', array('project_id' => $project['id'], 'action_id' => $action['id'])) ?>
+            <?= $this->a(t('Remove'), 'action', 'confirm', array('project_id' => $project['id'], 'action_id' => $action['id'])) ?>
         </td>
     </tr>
     <?php endforeach ?>
@@ -51,12 +51,12 @@
 <?php endif ?>
 
 <h3><?= t('Add an action') ?></h3>
-<form method="post" action="<?= Helper\u('action', 'event', array('project_id' => $project['id'])) ?>" class="listing">
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+<form method="post" action="<?= $this->u('action', 'event', array('project_id' => $project['id'])) ?>" class="listing">
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Action'), 'action_name') ?>
-    <?= Helper\form_select('action_name', $available_actions, $values) ?><br/>
+    <?= $this->formLabel(t('Action'), 'action_name') ?>
+    <?= $this->formSelect('action_name', $available_actions, $values) ?><br/>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Next step') ?>" class="btn btn-blue"/>
diff --git a/app/Template/action/params.php b/app/Template/action/params.php
index f221d92e..3a5ecb86 100644
--- a/app/Template/action/params.php
+++ b/app/Template/action/params.php
@@ -3,34 +3,34 @@
 </div>
 
 <h3><?= t('Define action parameters') ?></h3>
-<form method="post" action="<?= Helper\u('action', 'create', array('project_id' => $project['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('action', 'create', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('project_id', $values) ?>
-    <?= Helper\form_hidden('event_name', $values) ?>
-    <?= Helper\form_hidden('action_name', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
+    <?= $this->formHidden('event_name', $values) ?>
+    <?= $this->formHidden('action_name', $values) ?>
 
     <?php foreach ($action_params as $param_name => $param_desc): ?>
 
-        <?php if (Helper\contains($param_name, 'column_id')): ?>
-            <?= Helper\form_label($param_desc, $param_name) ?>
-            <?= Helper\form_select('params['.$param_name.']', $columns_list, $values) ?><br/>
-        <?php elseif (Helper\contains($param_name, 'user_id')): ?>
-            <?= Helper\form_label($param_desc, $param_name) ?>
-            <?= Helper\form_select('params['.$param_name.']', $users_list, $values) ?><br/>
-        <?php elseif (Helper\contains($param_name, 'project_id')): ?>
-            <?= Helper\form_label($param_desc, $param_name) ?>
-            <?= Helper\form_select('params['.$param_name.']', $projects_list, $values) ?><br/>
-        <?php elseif (Helper\contains($param_name, 'color_id')): ?>
-            <?= Helper\form_label($param_desc, $param_name) ?>
-            <?= Helper\form_select('params['.$param_name.']', $colors_list, $values) ?><br/>
-        <?php elseif (Helper\contains($param_name, 'category_id')): ?>
-            <?= Helper\form_label($param_desc, $param_name) ?>
-            <?= Helper\form_select('params['.$param_name.']', $categories_list, $values) ?><br/>
-        <?php elseif (Helper\contains($param_name, 'label')): ?>
-            <?= Helper\form_label($param_desc, $param_name) ?>
-            <?= Helper\form_text('params['.$param_name.']', $values) ?>
+        <?php if ($this->contains($param_name, 'column_id')): ?>
+            <?= $this->formLabel($param_desc, $param_name) ?>
+            <?= $this->formSelect('params['.$param_name.']', $columns_list, $values) ?><br/>
+        <?php elseif ($this->contains($param_name, 'user_id')): ?>
+            <?= $this->formLabel($param_desc, $param_name) ?>
+            <?= $this->formSelect('params['.$param_name.']', $users_list, $values) ?><br/>
+        <?php elseif ($this->contains($param_name, 'project_id')): ?>
+            <?= $this->formLabel($param_desc, $param_name) ?>
+            <?= $this->formSelect('params['.$param_name.']', $projects_list, $values) ?><br/>
+        <?php elseif ($this->contains($param_name, 'color_id')): ?>
+            <?= $this->formLabel($param_desc, $param_name) ?>
+            <?= $this->formSelect('params['.$param_name.']', $colors_list, $values) ?><br/>
+        <?php elseif ($this->contains($param_name, 'category_id')): ?>
+            <?= $this->formLabel($param_desc, $param_name) ?>
+            <?= $this->formSelect('params['.$param_name.']', $categories_list, $values) ?><br/>
+        <?php elseif ($this->contains($param_name, 'label')): ?>
+            <?= $this->formLabel($param_desc, $param_name) ?>
+            <?= $this->formText('params['.$param_name.']', $values) ?>
         <?php endif ?>
 
     <?php endforeach ?>
@@ -38,6 +38,6 @@
     <div class="form-actions">
         <input type="submit" value="<?= t('Save this action') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'action', 'index', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('cancel'), 'action', 'index', array('project_id' => $project['id'])) ?>
     </div>
 </form>
\ No newline at end of file
diff --git a/app/Template/action/remove.php b/app/Template/action/remove.php
index 131c2b54..672c08a7 100644
--- a/app/Template/action/remove.php
+++ b/app/Template/action/remove.php
@@ -4,12 +4,12 @@
 
 <div class="confirm">
     <p class="alert alert-info">
-        <?= t('Do you really want to remove this action: "%s"?', Helper\in_list($action['event_name'], $available_events).'/'.Helper\in_list($action['action_name'], $available_actions)) ?>
+        <?= t('Do you really want to remove this action: "%s"?', $this->inList($action['event_name'], $available_events).'/'.$this->inList($action['action_name'], $available_actions)) ?>
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'action', 'remove', array('project_id' => $project['id'], 'action_id' => $action['id']), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'action', 'remove', array('project_id' => $project['id'], 'action_id' => $action['id']), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'action', 'index', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('cancel'), 'action', 'index', array('project_id' => $project['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/analytic/cfd.php b/app/Template/analytic/cfd.php
index d8dd5517..58115e77 100644
--- a/app/Template/analytic/cfd.php
+++ b/app/Template/analytic/cfd.php
@@ -6,24 +6,24 @@
     <p class="alert"><?= t('Not enough data to show the graph.') ?></p>
 <?php else: ?>
     <section id="analytic-cfd">
-        <div id="chart" data-url="<?= Helper\u('analytic', 'cfd', array('project_id' => $project['id'], 'from' => $values['from'], 'to' => $values['to'])) ?>"></div>
+        <div id="chart" data-url="<?= $this->u('analytic', 'cfd', array('project_id' => $project['id'], 'from' => $values['from'], 'to' => $values['to'])) ?>"></div>
     </section>
 <?php endif ?>
 
 <hr/>
 
-<form method="post" class="form-inline" action="<?= Helper\u('analytic', 'cfd', array('project_id' => $project['id'])) ?>" autocomplete="off">
+<form method="post" class="form-inline" action="<?= $this->u('analytic', 'cfd', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
     <div class="form-inline-group">
-        <?= Helper\form_label(t('Start Date'), 'from') ?>
-        <?= Helper\form_text('from', $values, array(), array('required', 'placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?>
+        <?= $this->formLabel(t('Start Date'), 'from') ?>
+        <?= $this->formText('from', $values, array(), array('required', 'placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?>
     </div>
 
     <div class="form-inline-group">
-        <?= Helper\form_label(t('End Date'), 'to') ?>
-        <?= Helper\form_text('to', $values, array(), array('required', 'placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?>
+        <?= $this->formLabel(t('End Date'), 'to') ?>
+        <?= $this->formText('to', $values, array(), array('required', 'placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?>
     </div>
 
     <div class="form-inline-group">
diff --git a/app/Template/analytic/layout.php b/app/Template/analytic/layout.php
index 2dd7a4f5..f2506917 100644
--- a/app/Template/analytic/layout.php
+++ b/app/Template/analytic/layout.php
@@ -1,15 +1,15 @@
-<?= Helper\js('assets/js/d3.v3.4.8.min.js') ?>
-<?= Helper\js('assets/js/dimple.v2.1.0.min.js') ?>
+<?= $this->js('assets/js/d3.v3.4.8.min.js') ?>
+<?= $this->js('assets/js/dimple.v2.1.0.min.js') ?>
 
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
         </ul>
     </div>
     <section class="sidebar-container" id="analytic-section">
 
-        <?= Helper\template('analytic/sidebar', array('project' => $project)) ?>
+        <?= $this->render('analytic/sidebar', array('project' => $project)) ?>
 
         <div class="sidebar-content">
             <?= $analytic_content_for_layout ?>
diff --git a/app/Template/analytic/sidebar.php b/app/Template/analytic/sidebar.php
index 9b2fd9f6..a7076db9 100644
--- a/app/Template/analytic/sidebar.php
+++ b/app/Template/analytic/sidebar.php
@@ -2,13 +2,13 @@
     <h2><?= t('Reportings') ?></h2>
     <ul>
         <li>
-            <?= Helper\a(t('Task distribution'), 'analytic', 'tasks', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Task distribution'), 'analytic', 'tasks', array('project_id' => $project['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('User repartition'), 'analytic', 'users', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('User repartition'), 'analytic', 'users', array('project_id' => $project['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Cumulative flow diagram'), 'analytic', 'cfd', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Cumulative flow diagram'), 'analytic', 'cfd', array('project_id' => $project['id'])) ?>
         </li>
     </ul>
 </div>
\ No newline at end of file
diff --git a/app/Template/analytic/tasks.php b/app/Template/analytic/tasks.php
index b8b630f9..b1a08a23 100644
--- a/app/Template/analytic/tasks.php
+++ b/app/Template/analytic/tasks.php
@@ -7,7 +7,7 @@
 <?php else: ?>
     <section id="analytic-task-repartition">
 
-    <div id="chart" data-url="<?= Helper\u('analytic', 'tasks', array('project_id' => $project['id'])) ?>"></div>
+    <div id="chart" data-url="<?= $this->u('analytic', 'tasks', array('project_id' => $project['id'])) ?>"></div>
 
     <table>
         <tr>
@@ -18,7 +18,7 @@
         <?php foreach ($metrics as $metric): ?>
         <tr>
             <td>
-                <?= Helper\escape($metric['column_title']) ?>
+                <?= $this->e($metric['column_title']) ?>
             </td>
             <td>
                 <?= $metric['nb_tasks'] ?>
diff --git a/app/Template/analytic/users.php b/app/Template/analytic/users.php
index 007f7bc6..97328c02 100644
--- a/app/Template/analytic/users.php
+++ b/app/Template/analytic/users.php
@@ -7,7 +7,7 @@
 <?php else: ?>
     <section id="analytic-user-repartition">
 
-    <div id="chart" data-url="<?= Helper\u('analytic', 'users', array('project_id' => $project['id'])) ?>"></div>
+    <div id="chart" data-url="<?= $this->u('analytic', 'users', array('project_id' => $project['id'])) ?>"></div>
 
     <table>
         <tr>
@@ -18,7 +18,7 @@
         <?php foreach ($metrics as $metric): ?>
         <tr>
             <td>
-                <?= Helper\escape($metric['user']) ?>
+                <?= $this->e($metric['user']) ?>
             </td>
             <td>
                 <?= $metric['nb_tasks'] ?>
diff --git a/app/Template/app/dashboard.php b/app/Template/app/dashboard.php
index 22b77eaa..5064967b 100644
--- a/app/Template/app/dashboard.php
+++ b/app/Template/app/dashboard.php
@@ -1,26 +1,26 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <?php if (Helper\is_admin()): ?>
-                <li><i class="fa fa-plus fa-fw"></i><?= Helper\a(t('New project'), 'project', 'create') ?></li>
+            <?php if ($this->acl->isAdminUser()): ?>
+                <li><i class="fa fa-plus fa-fw"></i><?= $this->a(t('New project'), 'project', 'create') ?></li>
             <?php endif ?>
-            <li><i class="fa fa-lock fa-fw"></i><?= Helper\a(t('New private project'), 'project', 'create', array('private' => 1)) ?></li>
-            <li><i class="fa fa-folder fa-fw"></i><?= Helper\a(t('Project management'), 'project', 'index') ?></li>
-            <?php if (Helper\is_admin()): ?>
-                <li><i class="fa fa-user fa-fw"></i><?= Helper\a(t('User management'), 'user', 'index') ?></li>
-                <li><i class="fa fa-cog fa-fw"></i><?= Helper\a(t('Settings'), 'config', 'index') ?></li>
+            <li><i class="fa fa-lock fa-fw"></i><?= $this->a(t('New private project'), 'project', 'create', array('private' => 1)) ?></li>
+            <li><i class="fa fa-folder fa-fw"></i><?= $this->a(t('Project management'), 'project', 'index') ?></li>
+            <?php if ($this->acl->isAdminUser()): ?>
+                <li><i class="fa fa-user fa-fw"></i><?= $this->a(t('User management'), 'user', 'index') ?></li>
+                <li><i class="fa fa-cog fa-fw"></i><?= $this->a(t('Settings'), 'config', 'index') ?></li>
             <?php endif ?>
         </ul>
     </div>
     <section id="dashboard">
         <div class="dashboard-left-column">
-            <?= Helper\Template('app/projects', array('projects' => $projects, 'pagination' => $project_pagination)) ?>
-            <?= Helper\Template('app/tasks', array('tasks' => $tasks, 'pagination' => $task_pagination)) ?>
-            <?= Helper\Template('app/subtasks', array('subtasks' => $subtasks, 'pagination' => $subtask_pagination)) ?>
+            <?= $this->render('app/projects', array('projects' => $projects, 'pagination' => $project_pagination)) ?>
+            <?= $this->render('app/tasks', array('tasks' => $tasks, 'pagination' => $task_pagination)) ?>
+            <?= $this->render('app/subtasks', array('subtasks' => $subtasks, 'pagination' => $subtask_pagination)) ?>
         </div>
         <div class="dashboard-right-column">
             <h2><?= t('Activity stream') ?></h2>
-            <?= Helper\template('project/events', array('events' => $events)) ?>
+            <?= $this->render('project/events', array('events' => $events)) ?>
         </div>
     </section>
 </section>
\ No newline at end of file
diff --git a/app/Template/app/projects.php b/app/Template/app/projects.php
index 2c13a052..cb698c28 100644
--- a/app/Template/app/projects.php
+++ b/app/Template/app/projects.php
@@ -4,30 +4,30 @@
 <?php else: ?>
     <table class="table-fixed">
         <tr>
-            <th class="column-8"><?= Helper\order('Id', 'id', $pagination) ?></th>
-            <th class="column-20"><?= Helper\order(t('Project'), 'name', $pagination) ?></th>
+            <th class="column-8"><?= $this->order('Id', 'id', $pagination) ?></th>
+            <th class="column-20"><?= $this->order(t('Project'), 'name', $pagination) ?></th>
             <th><?= t('Columns') ?></th>
         </tr>
         <?php foreach ($projects as $project): ?>
         <tr>
             <td>
-                <?= Helper\a('#'.$project['id'], 'board', 'show', array('project_id' => $project['id']), false, 'dashboard-table-link') ?>
+                <?= $this->a('#'.$project['id'], 'board', 'show', array('project_id' => $project['id']), false, 'dashboard-table-link') ?>
             </td>
             <td>
-                <?php if (Helper\is_project_admin($project)): ?>
-                    <?= Helper\a('<i class="fa fa-cog"></i>', 'project', 'show', array('project_id' => $project['id']), false, 'dashboard-table-link', t('Settings')) ?>&nbsp;
+                <?php if ($this->projectPermission->adminAllowed($project['id'], $this->acl->getUserId())): ?>
+                    <?= $this->a('<i class="fa fa-cog"></i>', 'project', 'show', array('project_id' => $project['id']), false, 'dashboard-table-link', t('Settings')) ?>&nbsp;
                 <?php endif ?>
-                <?= Helper\a(Helper\escape($project['name']), 'board', 'show', array('project_id' => $project['id'])) ?>
+                <?= $this->a($this->e($project['name']), 'board', 'show', array('project_id' => $project['id'])) ?>
             </td>
             <td class="dashboard-project-stats">
                 <?php foreach ($project['columns'] as $column): ?>
                     <strong title="<?= t('Task count') ?>"><?= $column['nb_tasks'] ?></strong>
-                    <span><?= Helper\escape($column['title']) ?></span>
+                    <span><?= $this->e($column['title']) ?></span>
                 <?php endforeach ?>
             </td>
         </tr>
         <?php endforeach ?>
     </table>
 
-    <?= Helper\paginate($pagination) ?>
+    <?= $this->paginate($pagination) ?>
 <?php endif ?>
\ No newline at end of file
diff --git a/app/Template/app/subtasks.php b/app/Template/app/subtasks.php
index fb451068..47d4782c 100644
--- a/app/Template/app/subtasks.php
+++ b/app/Template/app/subtasks.php
@@ -4,28 +4,28 @@
 <?php else: ?>
     <table class="table-fixed">
         <tr>
-            <th class="column-10"><?= Helper\order('Id', 'tasks.id', $pagination) ?></th>
-            <th class="column-20"><?= Helper\order(t('Project'), 'project_name', $pagination) ?></th>
-            <th class="column-15"><?= Helper\order(t('Status'), 'status', $pagination) ?></th>
-            <th><?= Helper\order(t('Subtask'), 'title', $pagination) ?></th>
+            <th class="column-10"><?= $this->order('Id', 'tasks.id', $pagination) ?></th>
+            <th class="column-20"><?= $this->order(t('Project'), 'project_name', $pagination) ?></th>
+            <th class="column-15"><?= $this->order(t('Status'), 'status', $pagination) ?></th>
+            <th><?= $this->order(t('Subtask'), 'title', $pagination) ?></th>
         </tr>
         <?php foreach ($subtasks as $subtask): ?>
         <tr>
             <td class="task-table task-<?= $subtask['color_id'] ?>">
-                <?= Helper\a('#'.$subtask['task_id'], 'task', 'show', array('task_id' => $subtask['task_id'])) ?>
+                <?= $this->a('#'.$subtask['task_id'], 'task', 'show', array('task_id' => $subtask['task_id'])) ?>
             </td>
             <td>
-                <?= Helper\a(Helper\escape($subtask['project_name']), 'board', 'show', array('project_id' => $subtask['project_id'])) ?>
+                <?= $this->a($this->e($subtask['project_name']), 'board', 'show', array('project_id' => $subtask['project_id'])) ?>
             </td>
             <td>
-                <?= Helper\escape($subtask['status_name']) ?>
+                <?= $this->e($subtask['status_name']) ?>
             </td>
             <td>
-                <?= Helper\a(Helper\escape($subtask['title']), 'task', 'show', array('task_id' => $subtask['task_id'])) ?>
+                <?= $this->a($this->e($subtask['title']), 'task', 'show', array('task_id' => $subtask['task_id'])) ?>
             </td>
         </tr>
         <?php endforeach ?>
     </table>
 
-    <?= Helper\paginate($pagination) ?>
+    <?= $this->paginate($pagination) ?>
 <?php endif ?>
\ No newline at end of file
diff --git a/app/Template/app/tasks.php b/app/Template/app/tasks.php
index d1e1ed4e..57f1714f 100644
--- a/app/Template/app/tasks.php
+++ b/app/Template/app/tasks.php
@@ -4,21 +4,21 @@
 <?php else: ?>
     <table class="table-fixed">
         <tr>
-            <th class="column-8"><?= Helper\order('Id', 'tasks.id', $pagination) ?></th>
-            <th class="column-20"><?= Helper\order(t('Project'), 'project_name', $pagination) ?></th>
-            <th><?= Helper\order(t('Task'), 'title', $pagination) ?></th>
-            <th class="column-20"><?= Helper\order(t('Due date'), 'date_due', $pagination) ?></th>
+            <th class="column-8"><?= $this->order('Id', 'tasks.id', $pagination) ?></th>
+            <th class="column-20"><?= $this->order(t('Project'), 'project_name', $pagination) ?></th>
+            <th><?= $this->order(t('Task'), 'title', $pagination) ?></th>
+            <th class="column-20"><?= $this->order(t('Due date'), 'date_due', $pagination) ?></th>
         </tr>
         <?php foreach ($tasks as $task): ?>
         <tr>
             <td class="task-table task-<?= $task['color_id'] ?>">
-                <?= Helper\a('#'.$task['id'], 'task', 'show', array('task_id' => $task['id'])) ?>
+                <?= $this->a('#'.$task['id'], 'task', 'show', array('task_id' => $task['id'])) ?>
             </td>
             <td>
-                <?= Helper\a(Helper\escape($task['project_name']), 'board', 'show', array('project_id' => $task['project_id'])) ?>
+                <?= $this->a($this->e($task['project_name']), 'board', 'show', array('project_id' => $task['project_id'])) ?>
             </td>
             <td>
-                <?= Helper\a(Helper\escape($task['title']), 'task', 'show', array('task_id' => $task['id'])) ?>
+                <?= $this->a($this->e($task['title']), 'task', 'show', array('task_id' => $task['id'])) ?>
             </td>
             <td>
                 <?= dt('%B %e, %Y', $task['date_due']) ?>
@@ -27,5 +27,5 @@
         <?php endforeach ?>
     </table>
 
-    <?= Helper\paginate($pagination) ?>
+    <?= $this->paginate($pagination) ?>
 <?php endif ?>
\ No newline at end of file
diff --git a/app/Template/board/assignee.php b/app/Template/board/assignee.php
index 434daa51..1faf07f8 100644
--- a/app/Template/board/assignee.php
+++ b/app/Template/board/assignee.php
@@ -1,20 +1,20 @@
 <section id="main">
     <section>
         <h3><?= t('Change assignee for the task "%s"', $values['title']) ?></h3>
-        <form method="post" action="<?= Helper\u('board', 'updateAssignee', array('task_id' => $values['id'])) ?>">
+        <form method="post" action="<?= $this->u('board', 'updateAssignee', array('task_id' => $values['id'])) ?>">
 
-            <?= Helper\form_csrf() ?>
+            <?= $this->formCsrf() ?>
 
-            <?= Helper\form_hidden('id', $values) ?>
-            <?= Helper\form_hidden('project_id', $values) ?>
+            <?= $this->formHidden('id', $values) ?>
+            <?= $this->formHidden('project_id', $values) ?>
 
-            <?= Helper\form_label(t('Assignee'), 'owner_id') ?>
-            <?= Helper\form_select('owner_id', $users_list, $values) ?><br/>
+            <?= $this->formLabel(t('Assignee'), 'owner_id') ?>
+            <?= $this->formSelect('owner_id', $users_list, $values) ?><br/>
 
             <div class="form-actions">
                 <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
                 <?= t('or') ?>
-                <?= Helper\a(t('cancel'), 'board', 'show', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('cancel'), 'board', 'show', array('project_id' => $project['id'])) ?>
             </div>
         </form>
     </section>
diff --git a/app/Template/board/category.php b/app/Template/board/category.php
index 88d8e71c..3fc77632 100644
--- a/app/Template/board/category.php
+++ b/app/Template/board/category.php
@@ -1,20 +1,20 @@
 <section id="main">
     <section>
         <h3><?= t('Change category for the task "%s"', $values['title']) ?></h3>
-        <form method="post" action="<?= Helper\u('board', 'updateCategory', array('task_id' => $values['id'])) ?>">
+        <form method="post" action="<?= $this->u('board', 'updateCategory', array('task_id' => $values['id'])) ?>">
 
-            <?= Helper\form_csrf() ?>
+            <?= $this->formCsrf() ?>
 
-            <?= Helper\form_hidden('id', $values) ?>
-            <?= Helper\form_hidden('project_id', $values) ?>
+            <?= $this->formHidden('id', $values) ?>
+            <?= $this->formHidden('project_id', $values) ?>
 
-            <?= Helper\form_label(t('Category'), 'category_id') ?>
-            <?= Helper\form_select('category_id', $categories_list, $values) ?><br/>
+            <?= $this->formLabel(t('Category'), 'category_id') ?>
+            <?= $this->formSelect('category_id', $categories_list, $values) ?><br/>
 
             <div class="form-actions">
                 <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
                 <?= t('or') ?>
-                <?= Helper\a(t('cancel'), 'board', 'show', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('cancel'), 'board', 'show', array('project_id' => $project['id'])) ?>
             </div>
         </form>
     </section>
diff --git a/app/Template/board/comments.php b/app/Template/board/comments.php
index 83d6bd9a..5424df78 100644
--- a/app/Template/board/comments.php
+++ b/app/Template/board/comments.php
@@ -1,12 +1,12 @@
 <section>
     <?php foreach ($comments as $comment): ?>
         <p class="comment-title">
-            <span class="comment-username"><?= Helper\escape($comment['name'] ?: $comment['username']) ?></span> @ <span class="comment-date"><?= dt('%b %e, %Y, %k:%M %p', $comment['date']) ?></span>
+            <span class="comment-username"><?= $this->e($comment['name'] ?: $comment['username']) ?></span> @ <span class="comment-date"><?= dt('%b %e, %Y, %k:%M %p', $comment['date']) ?></span>
         </p>
 
 		<div class="comment-inner">
             <div class="markdown">
-                <?= Helper\markdown($comment['comment']) ?>
+                <?= $this->markdown($comment['comment']) ?>
             </div>
         </div>
     <?php endforeach ?>
diff --git a/app/Template/board/description.php b/app/Template/board/description.php
index 85e042dd..b38f5bf4 100644
--- a/app/Template/board/description.php
+++ b/app/Template/board/description.php
@@ -1,5 +1,5 @@
 <section class="tooltip-large">
 <div class="markdown">
-    <?= Helper\markdown($task['description']) ?>
+    <?= $this->markdown($task['description']) ?>
 </div>
 </section>
\ No newline at end of file
diff --git a/app/Template/board/edit.php b/app/Template/board/edit.php
index a44abcc8..65a8fb26 100644
--- a/app/Template/board/edit.php
+++ b/app/Template/board/edit.php
@@ -4,8 +4,8 @@
 <section>
 
 <h3><?= t('Change columns') ?></h3>
-<form method="post" action="<?= Helper\u('board', 'update', array('project_id' => $project['id'])) ?>" autocomplete="off">
-    <?= Helper\form_csrf() ?>
+<form method="post" action="<?= $this->u('board', 'update', array('project_id' => $project['id'])) ?>" autocomplete="off">
+    <?= $this->formCsrf() ?>
     <?php $i = 0; ?>
     <table>
         <tr>
@@ -16,23 +16,23 @@
         </tr>
         <?php foreach ($columns as $column): ?>
         <tr>
-            <td><?= Helper\form_label('#'.++$i, 'title['.$column['id'].']', array('title="column_id='.$column['id'].'"')) ?></td>
-            <td><?= Helper\form_text('title['.$column['id'].']', $values, $errors, array('required')) ?></td>
-            <td><?= Helper\form_number('task_limit['.$column['id'].']', $values, $errors, array('placeholder="'.t('limit').'"')) ?></td>
+            <td><?= $this->formLabel('#'.++$i, 'title['.$column['id'].']', array('title="column_id='.$column['id'].'"')) ?></td>
+            <td><?= $this->formText('title['.$column['id'].']', $values, $errors, array('required')) ?></td>
+            <td><?= $this->formNumber('task_limit['.$column['id'].']', $values, $errors, array('placeholder="'.t('limit').'"')) ?></td>
             <td>
                 <ul>
                     <?php if ($column['position'] != 1): ?>
                     <li>
-                        <?= Helper\a(t('Move Up'), 'board', 'moveColumn', array('project_id' => $project['id'], 'column_id' => $column['id'], 'direction' => 'up'), true) ?>
+                        <?= $this->a(t('Move Up'), 'board', 'moveColumn', array('project_id' => $project['id'], 'column_id' => $column['id'], 'direction' => 'up'), true) ?>
                     </li>
                     <?php endif ?>
                     <?php if ($column['position'] != count($columns)): ?>
                     <li>
-                        <?= Helper\a(t('Move Down'), 'board', 'moveColumn', array('project_id' => $project['id'], 'column_id' => $column['id'], 'direction' => 'down'), true) ?>
+                        <?= $this->a(t('Move Down'), 'board', 'moveColumn', array('project_id' => $project['id'], 'column_id' => $column['id'], 'direction' => 'down'), true) ?>
                     </li>
                     <?php endif ?>
                     <li>
-                        <?= Helper\a(t('Remove'), 'board', 'remove', array('project_id' => $project['id'], 'column_id' => $column['id'])) ?>
+                        <?= $this->a(t('Remove'), 'board', 'remove', array('project_id' => $project['id'], 'column_id' => $column['id'])) ?>
                     </li>
                 </ul>
             </td>
@@ -46,14 +46,14 @@
 </form>
 <hr/>
 <h3><?= t('Add a new column') ?></h3>
-<form method="post" action="<?= Helper\u('board', 'add', array('project_id' => $project['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('board', 'add', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Title'), 'title') ?>
-    <?= Helper\form_text('title', $values, $errors, array('required')) ?>
+    <?= $this->formLabel(t('Title'), 'title') ?>
+    <?= $this->formText('title', $values, $errors, array('required')) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Add this column') ?>" class="btn btn-blue"/>
diff --git a/app/Template/board/files.php b/app/Template/board/files.php
index 66d5bff9..fee0b63b 100644
--- a/app/Template/board/files.php
+++ b/app/Template/board/files.php
@@ -2,8 +2,8 @@
     <?php foreach ($files as $file): ?>
 		<i class="fa fa-file-o fa-fw"></i>
 
-        <?= Helper\a(
-            Helper\escape($file['name']),
+        <?= $this->a(
+            $this->e($file['name']),
             'file',
             'download',
             array('file_id' => $file['id'], 'task_id' => $file['task_id'])
diff --git a/app/Template/board/filters.php b/app/Template/board/filters.php
index a913f7be..1bce0029 100644
--- a/app/Template/board/filters.php
+++ b/app/Template/board/filters.php
@@ -2,34 +2,34 @@
     <ul class="board-filters">
         <li class="hide-tablet">
             <?= t('Filter by user') ?>
-            <?= Helper\form_select('user_id', $users) ?>
+            <?= $this->formSelect('user_id', $users) ?>
         </li>
         <li class="hide-tablet">
             <?= t('Filter by category') ?>
-            <?= Helper\form_select('category_id', $categories) ?>
+            <?= $this->formSelect('category_id', $categories) ?>
         </li>
         <li class="hide-tablet">
             <a href="#" id="filter-due-date"><?= t('Filter by due date') ?></a>
         </li>
         <li>
             <i class="fa fa-search"></i>
-            <?= Helper\a(t('Search'), 'project', 'search', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Search'), 'project', 'search', array('project_id' => $project['id'])) ?>
         </li>
         <li>
             <i class="fa fa-check-square-o fa-fw"></i>
-            <?= Helper\a(t('Completed tasks'), 'project', 'tasks', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Completed tasks'), 'project', 'tasks', array('project_id' => $project['id'])) ?>
         </li>
         <li>
             <i class="fa fa-dashboard fa-fw"></i>
-            <?= Helper\a(t('Activity'), 'project', 'activity', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Activity'), 'project', 'activity', array('project_id' => $project['id'])) ?>
         </li>
         <li>
             <i class="fa fa-line-chart fa-fw"></i>
-            <?= Helper\a(t('Analytics'), 'analytic', 'tasks', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Analytics'), 'analytic', 'tasks', array('project_id' => $project['id'])) ?>
         </li>
-        <?php if (Helper\is_admin()): ?>
+        <?php if ($this->projectPermission->adminAllowed($project['id'], $this->acl->getUserId())): ?>
             <li><i class="fa fa-cog fa-fw"></i>
-            <?= Helper\a(t('Configure'), 'project', 'show', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Configure'), 'project', 'show', array('project_id' => $project['id'])) ?>
         <?php endif ?>
     </ul>
 </div>
\ No newline at end of file
diff --git a/app/Template/board/index.php b/app/Template/board/index.php
index 53c662a0..78537085 100644
--- a/app/Template/board/index.php
+++ b/app/Template/board/index.php
@@ -1,12 +1,12 @@
 <section id="main">
 
-    <?= Helper\template('board/filters', array(
+    <?= $this->render('board/filters', array(
         'categories' => $categories,
         'users' => $users,
         'project' => $project,
     )) ?>
 
-    <?= Helper\template('board/show', array(
+    <?= $this->render('board/show', array(
             'project' => $project,
             'swimlanes' => $swimlanes,
             'categories' => $categories,
diff --git a/app/Template/board/public.php b/app/Template/board/public.php
index 0544f392..8eb6415d 100644
--- a/app/Template/board/public.php
+++ b/app/Template/board/public.php
@@ -1,6 +1,6 @@
 <section id="main" class="public-board">
 
-   <?= Helper\template('board/show', array(
+   <?= $this->render('board/show', array(
             'project' => $project,
             'swimlanes' => $swimlanes,
             'categories' => $categories,
diff --git a/app/Template/board/remove.php b/app/Template/board/remove.php
index 4529063b..4b0370eb 100644
--- a/app/Template/board/remove.php
+++ b/app/Template/board/remove.php
@@ -9,7 +9,7 @@
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'board', 'remove', array('project_id' => $project['id'], 'column_id' => $column['id'], 'remove' => 'yes'), true, 'btn btn-red') ?>
-        <?= t('or') ?> <?= Helper\a(t('cancel'), 'board', 'edit', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('Yes'), 'board', 'remove', array('project_id' => $project['id'], 'column_id' => $column['id'], 'remove' => 'yes'), true, 'btn btn-red') ?>
+        <?= t('or') ?> <?= $this->a(t('cancel'), 'board', 'edit', array('project_id' => $project['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/board/show.php b/app/Template/board/show.php
index 7df19bc1..5fbb576c 100644
--- a/app/Template/board/show.php
+++ b/app/Template/board/show.php
@@ -5,8 +5,8 @@
     <table id="board"
            data-project-id="<?= $project['id'] ?>"
            data-check-interval="<?= $board_private_refresh_interval ?>"
-           data-save-url="<?= Helper\u('board', 'save', array('project_id' => $project['id'])) ?>"
-           data-check-url="<?= Helper\u('board', 'check', array('project_id' => $project['id'], 'timestamp' => time())) ?>"
+           data-save-url="<?= $this->u('board', 'save', array('project_id' => $project['id'])) ?>"
+           data-check-url="<?= $this->u('board', 'check', array('project_id' => $project['id'], 'timestamp' => time())) ?>"
     >
 <?php endif ?>
 
@@ -15,7 +15,7 @@
         <p class="alert alert-error"><?= t('There is no column in your project!') ?></p>
         <?php break ?>
     <?php else: ?>
-        <?= Helper\template('board/swimlane', array(
+        <?= $this->render('board/swimlane', array(
             'project' => $project,
             'swimlane' => $swimlane,
             'board_highlight_period' => $board_highlight_period,
diff --git a/app/Template/board/subtasks.php b/app/Template/board/subtasks.php
index 53330022..72e2b15c 100644
--- a/app/Template/board/subtasks.php
+++ b/app/Template/board/subtasks.php
@@ -1,13 +1,13 @@
 <section id="tooltip-subtasks">
 <?php foreach ($subtasks as $subtask): ?>
-    <?= Helper\a(
-        trim(Helper\template('subtask/icons', array('subtask' => $subtask))) . Helper\escape($subtask['title']),
+    <?= $this->a(
+        trim($this->render('subtask/icons', array('subtask' => $subtask))) . $this->e($subtask['title']),
         'board',
         'toggleSubtask',
         array('task_id' => $subtask['task_id'], 'subtask_id' => $subtask['id'])
     ) ?>
 
-    <?= Helper\escape(empty($subtask['username']) ? '' : ' ['.Helper\get_username($subtask).']') ?>
+    <?= $this->e(empty($subtask['username']) ? '' : ' ['.$this->getFullname($subtask).']') ?>
 
     <br/>
 <?php endforeach ?>
diff --git a/app/Template/board/swimlane.php b/app/Template/board/swimlane.php
index e48eb6f1..5766141e 100644
--- a/app/Template/board/swimlane.php
+++ b/app/Template/board/swimlane.php
@@ -7,15 +7,15 @@
     <th>
         <?php if (! $not_editable): ?>
             <div class="board-add-icon">
-                <?= Helper\a('+', 'task', 'create', array('project_id' => $column['project_id'], 'column_id' => $column['id'], 'swimlane_id' => $swimlane['id']), false, 'task-creation-popover', t('Add a new task')) ?>
+                <?= $this->a('+', 'task', 'create', array('project_id' => $column['project_id'], 'column_id' => $column['id'], 'swimlane_id' => $swimlane['id']), false, 'task-creation-popover', t('Add a new task')) ?>
             </div>
         <?php endif ?>
 
-        <?= Helper\escape($column['title']) ?>
+        <?= $this->e($column['title']) ?>
 
         <?php if ($column['task_limit']): ?>
             <span title="<?= t('Task limit') ?>" class="task-limit">
-                (<span id="task-number-column-<?= $column['id'] ?>"><?= $column['nb_tasks'] ?></span>/<?= Helper\escape($column['task_limit']) ?>)
+                (<span id="task-number-column-<?= $column['id'] ?>"><?= $column['nb_tasks'] ?></span>/<?= $this->e($column['task_limit']) ?>)
             </span>
         <?php else: ?>
             <span title="<?= t('Task count') ?>" class="task-count">
@@ -28,7 +28,7 @@
 <tr>
     <?php if (! $hide_swimlane): ?>
         <th class="board-swimlane-title">
-            <?= Helper\escape($swimlane['name']) ?>
+            <?= $this->e($swimlane['name']) ?>
         </th>
     <?php endif ?>
 
@@ -46,7 +46,7 @@
         <?php endif ?>
 
         <?php foreach ($column['tasks'] as $task): ?>
-            <?= Helper\template('board/task', array(
+            <?= $this->render('board/task', array(
                 'project' => $project,
                 'task' => $task,
                 'categories' => $categories,
diff --git a/app/Template/board/task.php b/app/Template/board/task.php
index d077c773..f9f03dc3 100644
--- a/app/Template/board/task.php
+++ b/app/Template/board/task.php
@@ -4,7 +4,7 @@
 
 <div class="task-board task-<?= $task['color_id'] ?> <?= $task['date_modification'] > time() - $board_highlight_period ? 'task-board-recent' : '' ?>">
 
-    <?= Helper\a('#'.$task['id'], 'task', 'readonly', array('task_id' => $task['id'], 'token' => $project['token'])) ?>
+    <?= $this->a('#'.$task['id'], 'task', 'readonly', array('task_id' => $task['id'], 'token' => $project['token'])) ?>
 
     <?php if ($task['reference']): ?>
     <span class="task-board-reference" title="<?= t('Reference') ?>">
@@ -23,11 +23,11 @@
     </span>
 
     <?php if ($task['score']): ?>
-        <span class="task-score"><?= Helper\escape($task['score']) ?></span>
+        <span class="task-score"><?= $this->e($task['score']) ?></span>
     <?php endif ?>
 
     <div class="task-board-title">
-        <?= Helper\a(Helper\escape($task['title']), 'task', 'readonly', array('task_id' => $task['id'], 'token' => $project['token'])) ?>
+        <?= $this->a($this->e($task['title']), 'task', 'readonly', array('task_id' => $task['id'], 'token' => $project['token'])) ?>
     </div>
 
 <?php else: ?>
@@ -37,10 +37,10 @@
      data-owner-id="<?= $task['owner_id'] ?>"
      data-category-id="<?= $task['category_id'] ?>"
      data-due-date="<?= $task['date_due'] ?>"
-     data-task-url="<?= Helper\u('task', 'show', array('task_id' => $task['id'])) ?>"
+     data-task-url="<?= $this->u('task', 'show', array('task_id' => $task['id'])) ?>"
      title="<?= t('View this task') ?>">
 
-    <?= Helper\a('#'.$task['id'], 'task', 'edit', array('task_id' => $task['id']), false, 'task-edit-popover', t('Edit this task')) ?>
+    <?= $this->a('#'.$task['id'], 'task', 'edit', array('task_id' => $task['id']), false, 'task-edit-popover', t('Edit this task')) ?>
 
     <?php if ($task['reference']): ?>
     <span class="task-board-reference" title="<?= t('Reference') ?>">
@@ -51,9 +51,9 @@
     &nbsp;-&nbsp;
 
     <span class="task-board-user">
-        <?= Helper\a(
+        <?= $this->a(
             (! empty($task['owner_id']) ? t('Assigned to %s', $task['assignee_name'] ?: $task['assignee_username']) : t('Nobody assigned')) .
-            ( Helper\is_current_user($task['owner_id']) ? '&nbsp;<i class="fa fa-star"></i>' : ''),
+            ( $this->acl->isCurrentUser($task['owner_id']) ? '&nbsp;<i class="fa fa-star"></i>' : ''),
             'board',
             'changeAssignee',
             array('task_id' => $task['id']),
@@ -64,11 +64,11 @@
     </span>
 
     <?php if ($task['score']): ?>
-        <span class="task-score"><?= Helper\escape($task['score']) ?></span>
+        <span class="task-score"><?= $this->e($task['score']) ?></span>
     <?php endif ?>
 
     <div class="task-board-title">
-        <?= Helper\a(Helper\escape($task['title']), 'task', 'show', array('task_id' => $task['id']), false, '', t('View this task')) ?>
+        <?= $this->a($this->e($task['title']), 'task', 'show', array('task_id' => $task['id']), false, '', t('View this task')) ?>
     </div>
 
 <?php endif ?>
@@ -77,8 +77,8 @@
 <?php if ($task['category_id']): ?>
 <div class="task-board-category-container">
     <span class="task-board-category">
-        <?= Helper\a(
-            Helper\in_list($task['category_id'], $categories),
+        <?= $this->a(
+            $this->inList($task['category_id'], $categories),
             'board',
             'changeCategory',
             array('task_id' => $task['id']),
@@ -103,19 +103,19 @@
     <div class="task-board-icons">
 
         <?php if (! empty($task['nb_subtasks'])): ?>
-            <span title="<?= t('Sub-Tasks') ?>" class="task-board-tooltip" data-href="<?= helper\u('board', 'subtasks', array('task_id' => $task['id'])) ?>"><?= $task['nb_completed_subtasks'].'/'.$task['nb_subtasks'] ?> <i class="fa fa-bars"></i></span>
+            <span title="<?= t('Sub-Tasks') ?>" class="task-board-tooltip" data-href="<?= $this->u('board', 'subtasks', array('task_id' => $task['id'])) ?>"><?= $task['nb_completed_subtasks'].'/'.$task['nb_subtasks'] ?> <i class="fa fa-bars"></i></span>
         <?php endif ?>
 
         <?php if (! empty($task['nb_files'])): ?>
-            <span title="<?= t('Attachments') ?>" class="task-board-tooltip" data-href="<?= helper\u('board', 'attachments', array('task_id' => $task['id'])) ?>"><?= $task['nb_files'] ?> <i class="fa fa-paperclip"></i></span>
+            <span title="<?= t('Attachments') ?>" class="task-board-tooltip" data-href="<?= $this->u('board', 'attachments', array('task_id' => $task['id'])) ?>"><?= $task['nb_files'] ?> <i class="fa fa-paperclip"></i></span>
         <?php endif ?>
 
         <?php if (! empty($task['nb_comments'])): ?>
-            <span title="<?= p($task['nb_comments'], t('%d comment', $task['nb_comments']), t('%d comments', $task['nb_comments'])) ?>" class="task-board-tooltip" data-href="<?= helper\u('board', 'comments', array('task_id' => $task['id'])) ?>"><?= $task['nb_comments'] ?> <i class="fa fa-comment-o"></i></span>
+            <span title="<?= p($task['nb_comments'], t('%d comment', $task['nb_comments']), t('%d comments', $task['nb_comments'])) ?>" class="task-board-tooltip" data-href="<?= $this->u('board', 'comments', array('task_id' => $task['id'])) ?>"><?= $task['nb_comments'] ?> <i class="fa fa-comment-o"></i></span>
         <?php endif ?>
 
         <?php if (! empty($task['description'])): ?>
-            <span title="<?= t('Description') ?>" class="task-board-tooltip" data-href="<?= helper\u('board', 'description', array('task_id' => $task['id'])) ?>">
+            <span title="<?= t('Description') ?>" class="task-board-tooltip" data-href="<?= $this->u('board', 'description', array('task_id' => $task['id'])) ?>">
             <?php if (! isset($not_editable)): ?>
                 <a class="task-description-popover" href="?controller=task&amp;action=description&amp;task_id=<?= $task['id'] ?>"><i class="fa fa-file-text-o" data-href="?controller=task&amp;action=description&amp;task_id=<?= $task['id'] ?>"></i></a>
             <?php else: ?>
diff --git a/app/Template/category/edit.php b/app/Template/category/edit.php
index 66cf429b..bec175d5 100644
--- a/app/Template/category/edit.php
+++ b/app/Template/category/edit.php
@@ -2,15 +2,15 @@
     <h2><?= t('Category modification for the project "%s"', $project['name']) ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('category', 'update', array('project_id' => $project['id'], 'category_id' => $values['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('category', 'update', array('project_id' => $project['id'], 'category_id' => $values['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('id', $values) ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formHidden('id', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Category Name'), 'name') ?>
-    <?= Helper\form_text('name', $values, $errors, array('autofocus required')) ?>
+    <?= $this->formLabel(t('Category Name'), 'name') ?>
+    <?= $this->formText('name', $values, $errors, array('autofocus required')) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
diff --git a/app/Template/category/index.php b/app/Template/category/index.php
index bd275a67..f876275f 100644
--- a/app/Template/category/index.php
+++ b/app/Template/category/index.php
@@ -9,14 +9,14 @@
     </tr>
     <?php foreach ($categories as $category_id => $category_name): ?>
     <tr>
-        <td><?= Helper\escape($category_name) ?></td>
+        <td><?= $this->e($category_name) ?></td>
         <td>
             <ul>
                 <li>
-                    <?= Helper\a(t('Edit'), 'category', 'edit', array('project_id' => $project['id'], 'category_id' => $category_id)) ?>
+                    <?= $this->a(t('Edit'), 'category', 'edit', array('project_id' => $project['id'], 'category_id' => $category_id)) ?>
                 </li>
                 <li>
-                    <?= Helper\a(t('Remove'), 'category', 'confirm', array('project_id' => $project['id'], 'category_id' => $category_id)) ?>
+                    <?= $this->a(t('Remove'), 'category', 'confirm', array('project_id' => $project['id'], 'category_id' => $category_id)) ?>
                 </li>
             </ul>
         </td>
@@ -28,13 +28,13 @@
 <div class="page-header">
     <h2><?= t('Add a new category') ?></h2>
 </div>
-<form method="post" action="<?= Helper\u('category', 'save', array('project_id' => $project['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('category', 'save', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Category Name'), 'name') ?>
-    <?= Helper\form_text('name', $values, $errors, array('autofocus required')) ?>
+    <?= $this->formLabel(t('Category Name'), 'name') ?>
+    <?= $this->formText('name', $values, $errors, array('autofocus required')) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
diff --git a/app/Template/category/remove.php b/app/Template/category/remove.php
index 39e5c1db..8875b232 100644
--- a/app/Template/category/remove.php
+++ b/app/Template/category/remove.php
@@ -9,9 +9,9 @@
         </p>
 
         <div class="form-actions">
-            <?= Helper\a(t('Yes'), 'category', 'remove', array('project_id' => $project['id'], 'category_id' => $category['id']), true, 'btn btn-red') ?>
+            <?= $this->a(t('Yes'), 'category', 'remove', array('project_id' => $project['id'], 'category_id' => $category['id']), true, 'btn btn-red') ?>
             <?= t('or') ?>
-            <?= Helper\a(t('cancel'), 'category', 'index', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('cancel'), 'category', 'index', array('project_id' => $project['id'])) ?>
         </div>
     </div>
 </section>
\ No newline at end of file
diff --git a/app/Template/comment/create.php b/app/Template/comment/create.php
index d72fa627..4110711e 100644
--- a/app/Template/comment/create.php
+++ b/app/Template/comment/create.php
@@ -2,10 +2,10 @@
     <h2><?= t('Add a comment') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('comment', 'save', array('task_id' => $task['id'])) ?>" autocomplete="off">
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('task_id', $values) ?>
-    <?= Helper\form_hidden('user_id', $values) ?>
+<form method="post" action="<?= $this->u('comment', 'save', array('task_id' => $task['id'])) ?>" autocomplete="off">
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('task_id', $values) ?>
+    <?= $this->formHidden('user_id', $values) ?>
 
     <div class="form-tabs">
         <ul class="form-tabs-nav">
@@ -17,7 +17,7 @@
             </li>
         </ul>
         <div class="write-area">
-            <?= Helper\form_textarea('comment', $values, $errors, array(! isset($skip_cancel) ? 'autofocus' : '', 'required', 'placeholder="'.t('Leave a comment').'"'), 'comment-textarea') ?>
+            <?= $this->formTextarea('comment', $values, $errors, array(! isset($skip_cancel) ? 'autofocus' : '', 'required', 'placeholder="'.t('Leave a comment').'"'), 'comment-textarea') ?>
         </div>
         <div class="preview-area">
             <div class="markdown"></div>
@@ -30,7 +30,7 @@
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?php if (! isset($skip_cancel)): ?>
             <?= t('or') ?>
-            <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
         <?php endif ?>
     </div>
 </form>
diff --git a/app/Template/comment/edit.php b/app/Template/comment/edit.php
index 386dd9b1..51c3ced8 100644
--- a/app/Template/comment/edit.php
+++ b/app/Template/comment/edit.php
@@ -2,11 +2,11 @@
     <h2><?= t('Edit a comment') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('comment', 'update', array('task_id' => $task['id'], 'comment_id' => $comment['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('comment', 'update', array('task_id' => $task['id'], 'comment_id' => $comment['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('id', $values) ?>
-    <?= Helper\form_hidden('task_id', $values) ?>
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('id', $values) ?>
+    <?= $this->formHidden('task_id', $values) ?>
 
     <div class="form-tabs">
         <ul class="form-tabs-nav">
@@ -18,7 +18,7 @@
             </li>
         </ul>
         <div class="write-area">
-            <?= Helper\form_textarea('comment', $values, $errors, array('autofocus', 'required', 'placeholder="'.t('Leave a comment').'"'), 'comment-textarea') ?>
+            <?= $this->formTextarea('comment', $values, $errors, array('autofocus', 'required', 'placeholder="'.t('Leave a comment').'"'), 'comment-textarea') ?>
         </div>
         <div class="preview-area">
             <div class="markdown"></div>
@@ -30,6 +30,6 @@
     <div class="form-actions">
         <input type="submit" value="<?= t('Update') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </form>
diff --git a/app/Template/comment/remove.php b/app/Template/comment/remove.php
index 50382369..374d2c37 100644
--- a/app/Template/comment/remove.php
+++ b/app/Template/comment/remove.php
@@ -7,11 +7,11 @@
         <?= t('Do you really want to remove this comment?') ?>
     </p>
 
-    <?= Helper\template('comment/show', array('comment' => $comment, 'task' => $task, 'preview' => true)) ?>
+    <?= $this->render('comment/show', array('comment' => $comment, 'task' => $task, 'preview' => true)) ?>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'comment', 'remove', array('task_id' => $task['id'], 'comment_id' => $comment['id']), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'comment', 'remove', array('task_id' => $task['id'], 'comment_id' => $comment['id']), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/comment/show.php b/app/Template/comment/show.php
index 5e1e9337..2631975a 100644
--- a/app/Template/comment/show.php
+++ b/app/Template/comment/show.php
@@ -1,7 +1,7 @@
 <div class="comment <?= isset($preview) ? 'comment-preview' : '' ?>" id="comment-<?= $comment['id'] ?>">
 
     <p class="comment-title">
-        <span class="comment-username"><?= Helper\escape($comment['name'] ?: $comment['username']) ?></span> @ <span class="comment-date"><?= dt('%B %e, %Y at %k:%M %p', $comment['date']) ?></span>
+        <span class="comment-username"><?= $this->e($comment['name'] ?: $comment['username']) ?></span> @ <span class="comment-date"><?= dt('%B %e, %Y at %k:%M %p', $comment['date']) ?></span>
     </p>
 
     <div class="comment-inner">
@@ -9,12 +9,12 @@
         <?php if (! isset($preview)): ?>
         <ul class="comment-actions">
             <li><a href="#comment-<?= $comment['id'] ?>"><?= t('link') ?></a></li>
-            <?php if ((! isset($not_editable) || ! $not_editable) && (Helper\is_admin() || Helper\is_current_user($comment['user_id']))): ?>
+            <?php if ((! isset($not_editable) || ! $not_editable) && ($this->acl->isAdminUser() || $this->acl->isCurrentUser($comment['user_id']))): ?>
                 <li>
-                    <?= Helper\a(t('remove'), 'comment', 'confirm', array('task_id' => $task['id'], 'comment_id' => $comment['id'])) ?>
+                    <?= $this->a(t('remove'), 'comment', 'confirm', array('task_id' => $task['id'], 'comment_id' => $comment['id'])) ?>
                 </li>
                 <li>
-                    <?= Helper\a(t('edit'), 'comment', 'edit', array('task_id' => $task['id'], 'comment_id' => $comment['id'])) ?>
+                    <?= $this->a(t('edit'), 'comment', 'edit', array('task_id' => $task['id'], 'comment_id' => $comment['id'])) ?>
                 </li>
             <?php endif ?>
         </ul>
@@ -22,7 +22,7 @@
 
         <div class="markdown">
             <?php if (isset($is_public) && $is_public): ?>
-                <?= Helper\markdown(
+                <?= $this->markdown(
                     $comment['comment'],
                     array(
                         'controller' => 'task',
@@ -33,7 +33,7 @@
                     )
                 ) ?>
             <?php else: ?>
-                <?= Helper\markdown($comment['comment']) ?>
+                <?= $this->markdown($comment['comment']) ?>
             <?php endif ?>
         </div>
 
diff --git a/app/Template/config/about.php b/app/Template/config/about.php
index 3f34f802..d96e6bdd 100644
--- a/app/Template/config/about.php
+++ b/app/Template/config/about.php
@@ -21,19 +21,19 @@
     <ul>
         <li>
             <?= t('Database driver:') ?>
-            <strong><?= Helper\escape(DB_DRIVER) ?></strong>
+            <strong><?= $this->e(DB_DRIVER) ?></strong>
         </li>
         <?php if (DB_DRIVER === 'sqlite'): ?>
             <li>
                 <?= t('Database size:') ?>
-                <strong><?= Helper\format_bytes($db_size) ?></strong>
+                <strong><?= $this->formatBytes($db_size) ?></strong>
             </li>
             <li>
-                <?= Helper\a(t('Download the database'), 'config', 'downloadDb', array(), true) ?>&nbsp;
+                <?= $this->a(t('Download the database'), 'config', 'downloadDb', array(), true) ?>&nbsp;
                 <?= t('(Gzip compressed Sqlite file)') ?>
             </li>
             <li>
-                <?= Helper\a(t('Optimize the database'), 'config', 'optimizeDb', array(), true) ?>&nbsp;
+                <?= $this->a(t('Optimize the database'), 'config', 'optimizeDb', array(), true) ?>&nbsp;
                 <?= t('(VACUUM command)') ?>
             </li>
         <?php endif ?>
diff --git a/app/Template/config/api.php b/app/Template/config/api.php
index 20a02340..0df90835 100644
--- a/app/Template/config/api.php
+++ b/app/Template/config/api.php
@@ -5,14 +5,14 @@
     <ul>
         <li>
             <?= t('API token:') ?>
-            <strong><?= Helper\escape($values['api_token']) ?></strong>
+            <strong><?= $this->e($values['api_token']) ?></strong>
         </li>
         <li>
             <?= t('API endpoint:') ?>
-            <input type="text" class="auto-select" readonly="readonly" value="<?= Helper\get_current_base_url().'jsonrpc.php' ?>">
+            <input type="text" class="auto-select" readonly="readonly" value="<?= $this->getCurrentBaseUrl().'jsonrpc.php' ?>">
         </li>
         <li>
-            <?= Helper\a(t('Reset token'), 'config', 'token', array('type' => 'api'), true) ?>
+            <?= $this->a(t('Reset token'), 'config', 'token', array('type' => 'api'), true) ?>
         </li>
     </ul>
 </section>
\ No newline at end of file
diff --git a/app/Template/config/application.php b/app/Template/config/application.php
index c92975bc..26f3743e 100644
--- a/app/Template/config/application.php
+++ b/app/Template/config/application.php
@@ -2,22 +2,22 @@
     <h2><?= t('Application settings') ?></h2>
 </div>
 <section>
-<form method="post" action="<?= Helper\u('config', 'application') ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('config', 'application') ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_label(t('Application URL'), 'application_url') ?>
-    <?= Helper\form_text('application_url', $values, $errors, array('placeholder="http://example.kanboard.net/"')) ?><br/>
+    <?= $this->formLabel(t('Application URL'), 'application_url') ?>
+    <?= $this->formText('application_url', $values, $errors, array('placeholder="http://example.kanboard.net/"')) ?><br/>
     <p class="form-help"><?= t('Example: http://example.kanboard.net/ (used by email notifications)') ?></p>
 
-    <?= Helper\form_label(t('Language'), 'application_language') ?>
-    <?= Helper\form_select('application_language', $languages, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Language'), 'application_language') ?>
+    <?= $this->formSelect('application_language', $languages, $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Timezone'), 'application_timezone') ?>
-    <?= Helper\form_select('application_timezone', $timezones, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Timezone'), 'application_timezone') ?>
+    <?= $this->formSelect('application_timezone', $timezones, $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Date format'), 'application_date_format') ?>
-    <?= Helper\form_select('application_date_format', $date_formats, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Date format'), 'application_date_format') ?>
+    <?= $this->formSelect('application_date_format', $date_formats, $values, $errors) ?><br/>
     <p class="form-help"><?= t('ISO format is always accepted, example: "%s" and "%s"', date('Y-m-d'), date('Y_m_d')) ?></p>
 
     <div class="form-actions">
diff --git a/app/Template/config/board.php b/app/Template/config/board.php
index f260d084..3bd4ecbd 100644
--- a/app/Template/config/board.php
+++ b/app/Template/config/board.php
@@ -2,24 +2,24 @@
     <h2><?= t('Board settings') ?></h2>
 </div>
 <section>
-<form method="post" action="<?= Helper\u('config', 'board') ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('config', 'board') ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_label(t('Task highlight period'), 'board_highlight_period') ?>
-    <?= Helper\form_number('board_highlight_period', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Task highlight period'), 'board_highlight_period') ?>
+    <?= $this->formNumber('board_highlight_period', $values, $errors) ?><br/>
     <p class="form-help"><?= t('Period (in second) to consider a task was modified recently (0 to disable, 2 days by default)') ?></p>
 
-    <?= Helper\form_label(t('Refresh interval for public board'), 'board_public_refresh_interval') ?>
-    <?= Helper\form_number('board_public_refresh_interval', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Refresh interval for public board'), 'board_public_refresh_interval') ?>
+    <?= $this->formNumber('board_public_refresh_interval', $values, $errors) ?><br/>
     <p class="form-help"><?= t('Frequency in second (60 seconds by default)') ?></p>
 
-    <?= Helper\form_label(t('Refresh interval for private board'), 'board_private_refresh_interval') ?>
-    <?= Helper\form_number('board_private_refresh_interval', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Refresh interval for private board'), 'board_private_refresh_interval') ?>
+    <?= $this->formNumber('board_private_refresh_interval', $values, $errors) ?><br/>
     <p class="form-help"><?= t('Frequency in second (0 to disable this feature, 10 seconds by default)') ?></p>
 
-    <?= Helper\form_label(t('Default columns for new projects (Comma-separated)'), 'board_columns') ?>
-    <?= Helper\form_text('board_columns', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Default columns for new projects (Comma-separated)'), 'board_columns') ?>
+    <?= $this->formText('board_columns', $values, $errors) ?><br/>
     <p class="form-help"><?= t('Default values are "%s"', $default_columns) ?></p>
 
     <div class="form-actions">
diff --git a/app/Template/config/layout.php b/app/Template/config/layout.php
index e0ac2fa8..028f138c 100644
--- a/app/Template/config/layout.php
+++ b/app/Template/config/layout.php
@@ -1,7 +1,7 @@
 <section id="main">
     <section class="sidebar-container" id="config-section">
 
-        <?= Helper\template('config/sidebar') ?>
+        <?= $this->render('config/sidebar') ?>
 
         <div class="sidebar-content">
             <?= $config_content_for_layout ?>
diff --git a/app/Template/config/sidebar.php b/app/Template/config/sidebar.php
index 5870ca81..8e6fa379 100644
--- a/app/Template/config/sidebar.php
+++ b/app/Template/config/sidebar.php
@@ -2,19 +2,19 @@
     <h2><?= t('Actions') ?></h2>
     <ul>
         <li>
-            <?= Helper\a(t('About'), 'config', 'index') ?>
+            <?= $this->a(t('About'), 'config', 'index') ?>
         </li>
         <li>
-            <?= Helper\a(t('Application settings'), 'config', 'application') ?>
+            <?= $this->a(t('Application settings'), 'config', 'application') ?>
         </li>
         <li>
-            <?= Helper\a(t('Board settings'), 'config', 'board') ?>
+            <?= $this->a(t('Board settings'), 'config', 'board') ?>
         </li>
         <li>
-            <?= Helper\a(t('Webhooks'), 'config', 'webhook') ?>
+            <?= $this->a(t('Webhooks'), 'config', 'webhook') ?>
         </li>
         <li>
-            <?= Helper\a(t('API'), 'config', 'api') ?>
+            <?= $this->a(t('API'), 'config', 'api') ?>
         </li>
     </ul>
 </div>
\ No newline at end of file
diff --git a/app/Template/config/webhook.php b/app/Template/config/webhook.php
index abd8da5f..d4f06d3f 100644
--- a/app/Template/config/webhook.php
+++ b/app/Template/config/webhook.php
@@ -2,15 +2,15 @@
     <h2><?= t('Webhook settings') ?></h2>
 </div>
 <section>
-<form method="post" action="<?= Helper\u('config', 'webhook') ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('config', 'webhook') ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_label(t('Webhook URL for task creation'), 'webhook_url_task_creation') ?>
-    <?= Helper\form_text('webhook_url_task_creation', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Webhook URL for task creation'), 'webhook_url_task_creation') ?>
+    <?= $this->formText('webhook_url_task_creation', $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Webhook URL for task modification'), 'webhook_url_task_modification') ?>
-    <?= Helper\form_text('webhook_url_task_modification', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Webhook URL for task modification'), 'webhook_url_task_modification') ?>
+    <?= $this->formText('webhook_url_task_modification', $values, $errors) ?><br/>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
@@ -25,14 +25,14 @@
     <ul>
         <li>
             <?= t('Webhook token:') ?>
-            <strong><?= Helper\escape($values['webhook_token']) ?></strong>
+            <strong><?= $this->e($values['webhook_token']) ?></strong>
         </li>
         <li>
             <?= t('URL for task creation:') ?>
-            <input type="text" class="auto-select" readonly="readonly" value="<?= Helper\get_current_base_url().Helper\u('webhook', 'task', array('token' => $values['webhook_token'])) ?>">
+            <input type="text" class="auto-select" readonly="readonly" value="<?= $this->getCurrentBaseUrl().$this->u('webhook', 'task', array('token' => $values['webhook_token'])) ?>">
         </li>
         <li>
-            <?= Helper\a(t('Reset token'), 'config', 'token', array('type' => 'webhook'), true) ?>
+            <?= $this->a(t('Reset token'), 'config', 'token', array('type' => 'webhook'), true) ?>
         </li>
     </ul>
 </section>
\ No newline at end of file
diff --git a/app/Template/event/comment_create.php b/app/Template/event/comment_create.php
index d2f6f97b..ee985ed1 100644
--- a/app/Template/event/comment_create.php
+++ b/app/Template/event/comment_create.php
@@ -1,7 +1,7 @@
 <p class="activity-title">
-    <?= e('%s commented the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s commented the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <div class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em><br/>
-    <div class="markdown"><?= Helper\markdown($comment['comment']) ?></div>
+    <em><?= $this->e($task['title']) ?></em><br/>
+    <div class="markdown"><?= $this->markdown($comment['comment']) ?></div>
 </div>
\ No newline at end of file
diff --git a/app/Template/event/comment_update.php b/app/Template/event/comment_update.php
index c0b43622..93418159 100644
--- a/app/Template/event/comment_update.php
+++ b/app/Template/event/comment_update.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s updated a comment on the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s updated a comment on the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <div class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em><br/>
+    <em><?= $this->e($task['title']) ?></em><br/>
 </div>
\ No newline at end of file
diff --git a/app/Template/event/subtask_create.php b/app/Template/event/subtask_create.php
index 664e9da2..3572031f 100644
--- a/app/Template/event/subtask_create.php
+++ b/app/Template/event/subtask_create.php
@@ -1,12 +1,12 @@
 <p class="activity-title">
-    <?= e('%s created a subtask for the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s created a subtask for the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <div class="activity-description">
-    <p><em><?= Helper\escape($task['title']) ?></em></p>
+    <p><em><?= $this->e($task['title']) ?></em></p>
 
     <ul>
         <li>
-            <?= Helper\escape($subtask['title']) ?> (<strong><?= Helper\escape($subtask['status_name']) ?></strong>)
+            <?= $this->e($subtask['title']) ?> (<strong><?= $this->e($subtask['status_name']) ?></strong>)
         </li>
         <li>
             <?php if ($subtask['username']): ?>
diff --git a/app/Template/event/subtask_update.php b/app/Template/event/subtask_update.php
index 96a589dd..0adc8ff5 100644
--- a/app/Template/event/subtask_update.php
+++ b/app/Template/event/subtask_update.php
@@ -1,12 +1,12 @@
 <p class="activity-title">
-    <?= e('%s updated a subtask for the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s updated a subtask for the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <div class="activity-description">
-    <p><em><?= Helper\escape($task['title']) ?></em></p>
+    <p><em><?= $this->e($task['title']) ?></em></p>
 
     <ul>
         <li>
-            <?= Helper\escape($subtask['title']) ?> (<strong><?= Helper\escape($subtask['status_name']) ?></strong>)
+            <?= $this->e($subtask['title']) ?> (<strong><?= $this->e($subtask['status_name']) ?></strong>)
         </li>
         <li>
             <?php if ($subtask['username']): ?>
diff --git a/app/Template/event/task_assignee_change.php b/app/Template/event/task_assignee_change.php
index b346325e..e9815853 100644
--- a/app/Template/event/task_assignee_change.php
+++ b/app/Template/event/task_assignee_change.php
@@ -1,12 +1,12 @@
 <p class="activity-title">
     <?= e(
             '%s change the assignee of the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a> to %s',
-            Helper\escape($author),
+            $this->e($author),
             $task_id,
             $task_id,
-            Helper\escape($task['assignee_name'] ?: $task['assignee_username'])
+            $this->e($task['assignee_name'] ?: $task['assignee_username'])
     ) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/event/task_close.php b/app/Template/event/task_close.php
index 48d25678..6ab476bd 100644
--- a/app/Template/event/task_close.php
+++ b/app/Template/event/task_close.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s closed the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s closed the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/event/task_create.php b/app/Template/event/task_create.php
index 2515af05..36bd4713 100644
--- a/app/Template/event/task_create.php
+++ b/app/Template/event/task_create.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s created the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s created the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/event/task_move_column.php b/app/Template/event/task_move_column.php
index f2aac8f7..9c5f54dd 100644
--- a/app/Template/event/task_move_column.php
+++ b/app/Template/event/task_move_column.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s moved the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a> to the column "%s"', Helper\escape($author), $task_id, $task_id, Helper\escape($task['column_title'])) ?>
+    <?= e('%s moved the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a> to the column "%s"', $this->e($author), $task_id, $task_id, $this->e($task['column_title'])) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/event/task_move_position.php b/app/Template/event/task_move_position.php
index 26cdeb13..86e09953 100644
--- a/app/Template/event/task_move_position.php
+++ b/app/Template/event/task_move_position.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s moved the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a> to the position #%d in the column "%s"', Helper\escape($author), $task_id, $task_id, $task['position'], Helper\escape($task['column_title'])) ?>
+    <?= e('%s moved the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a> to the position #%d in the column "%s"', $this->e($author), $task_id, $task_id, $task['position'], $this->e($task['column_title'])) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/event/task_open.php b/app/Template/event/task_open.php
index 9623be74..cdcb907c 100644
--- a/app/Template/event/task_open.php
+++ b/app/Template/event/task_open.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s open the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s open the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/event/task_update.php b/app/Template/event/task_update.php
index a270b936..34b96257 100644
--- a/app/Template/event/task_update.php
+++ b/app/Template/event/task_update.php
@@ -1,6 +1,6 @@
 <p class="activity-title">
-    <?= e('%s updated the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', Helper\escape($author), $task_id, $task_id) ?>
+    <?= e('%s updated the task <a href="?controller=task&amp;action=show&amp;task_id=%d">#%d</a>', $this->e($author), $task_id, $task_id) ?>
 </p>
 <p class="activity-description">
-    <em><?= Helper\escape($task['title']) ?></em>
+    <em><?= $this->e($task['title']) ?></em>
 </p>
\ No newline at end of file
diff --git a/app/Template/file/new.php b/app/Template/file/new.php
index 63c29f1d..861344b4 100644
--- a/app/Template/file/new.php
+++ b/app/Template/file/new.php
@@ -2,13 +2,13 @@
     <h2><?= t('Attach a document') ?></h2>
 </div>
 
-<form action="<?= Helper\u('file', 'save', array('task_id' => $task['id'])) ?>" method="post" enctype="multipart/form-data">
-    <?= Helper\form_csrf() ?>
+<form action="<?= $this->u('file', 'save', array('task_id' => $task['id'])) ?>" method="post" enctype="multipart/form-data">
+    <?= $this->formCsrf() ?>
     <input type="file" name="files[]" multiple />
-    <div class="form-help"><?= t('Maximum size: ') ?><?= is_integer($max_size) ? Helper\format_bytes($max_size) : $max_size ?></div>
+    <div class="form-help"><?= t('Maximum size: ') ?><?= is_integer($max_size) ? $this->formatBytes($max_size) : $max_size ?></div>
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </form>
\ No newline at end of file
diff --git a/app/Template/file/open.php b/app/Template/file/open.php
index 6106e6f8..9efd7780 100644
--- a/app/Template/file/open.php
+++ b/app/Template/file/open.php
@@ -1,6 +1,6 @@
 <div class="page-header">
-    <h2><?= Helper\escape($file['name']) ?></h2>
+    <h2><?= $this->e($file['name']) ?></h2>
     <div class="task-file-viewer">
-        <img src="<?= Helper\u('file', 'image', array('file_id' => $file['id'], 'task_id' => $file['task_id'])) ?>" alt="<?= Helper\escape($file['name']) ?>"/>
+        <img src="<?= $this->u('file', 'image', array('file_id' => $file['id'], 'task_id' => $file['task_id'])) ?>" alt="<?= $this->e($file['name']) ?>"/>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/file/remove.php b/app/Template/file/remove.php
index 4f655e5a..3e542c05 100644
--- a/app/Template/file/remove.php
+++ b/app/Template/file/remove.php
@@ -4,12 +4,12 @@
 
 <div class="confirm">
     <p class="alert alert-info">
-        <?= t('Do you really want to remove this file: "%s"?', Helper\escape($file['name'])) ?>
+        <?= t('Do you really want to remove this file: "%s"?', $this->e($file['name'])) ?>
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'file', 'remove', array('task_id' => $task['id'], 'file_id' => $file['id']), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'file', 'remove', array('task_id' => $task['id'], 'file_id' => $file['id']), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/file/show.php b/app/Template/file/show.php
index 92a7c100..4742db87 100644
--- a/app/Template/file/show.php
+++ b/app/Template/file/show.php
@@ -8,12 +8,12 @@
     <ul class="task-show-files">
     <?php foreach ($files as $file): ?>
         <li>
-            <?= Helper\a(Helper\escape($file['name']), 'file', 'download', array('task_id' => $task['id'], 'file_id' => $file['id'])) ?>
+            <?= $this->a($this->e($file['name']), 'file', 'download', array('task_id' => $task['id'], 'file_id' => $file['id'])) ?>
             <span class="task-show-file-actions">
                 <?php if ($file['is_image']): ?>
-                    <?= Helper\a(t('open'), 'file', 'open', array('task_id' => $task['id'], 'file_id' => $file['id']), false, 'file-popover') ?>,
+                    <?= $this->a(t('open'), 'file', 'open', array('task_id' => $task['id'], 'file_id' => $file['id']), false, 'file-popover') ?>,
                 <?php endif ?>
-                <?= Helper\a(t('remove'), 'file', 'confirm', array('task_id' => $task['id'], 'file_id' => $file['id'])) ?>
+                <?= $this->a(t('remove'), 'file', 'confirm', array('task_id' => $task['id'], 'file_id' => $file['id'])) ?>
             </span>
         </li>
     <?php endforeach ?>
diff --git a/app/Template/layout.php b/app/Template/layout.php
index 7edd0051..3b642b48 100644
--- a/app/Template/layout.php
+++ b/app/Template/layout.php
@@ -11,10 +11,10 @@
         <?php endif ?>
 
         <?php if (! isset($not_editable)): ?>
-            <?= Helper\js('assets/js/app.js') ?>
+            <?= $this->js('assets/js/app.js') ?>
         <?php endif ?>
 
-        <?= Helper\css('assets/css/app.css') ?>
+        <?= $this->css('assets/css/app.css') ?>
 
         <link rel="icon" type="image/png" href="assets/img/favicon.png">
         <link rel="apple-touch-icon" href="assets/img/touch-icon-iphone.png">
@@ -22,36 +22,36 @@
         <link rel="apple-touch-icon" sizes="114x114" href="assets/img/touch-icon-iphone-retina.png">
         <link rel="apple-touch-icon" sizes="144x144" href="assets/img/touch-icon-ipad-retina.png">
 
-        <title><?= isset($title) ? Helper\escape($title) : 'Kanboard' ?></title>
+        <title><?= isset($title) ? $this->e($title) : 'Kanboard' ?></title>
     </head>
-    <body data-status-url="<?= Helper\u('app', 'status') ?>" data-login-url="<?= Helper\u('user', 'login') ?>">
+    <body data-status-url="<?= $this->u('app', 'status') ?>" data-login-url="<?= $this->u('user', 'login') ?>">
     <?php if (isset($no_layout) && $no_layout): ?>
         <?= $content_for_layout ?>
     <?php else: ?>
         <header>
             <nav>
-                <h1><?= Helper\a('<i class="fa fa-home fa-fw"></i>', 'app', 'index', array(), false, 'home-link', t('Dashboard')).' '.Helper\summary(Helper\escape($title)) ?></h1>
+                <h1><?= $this->a('<i class="fa fa-home fa-fw"></i>', 'app', 'index', array(), false, 'home-link', t('Dashboard')).' '.$this->summary($this->e($title)) ?></h1>
                 <ul>
                     <?php if (isset($board_selector) && ! empty($board_selector)): ?>
                     <li>
-                        <select id="board-selector" data-placeholder="<?= t('Display another project') ?>" data-board-url="<?= Helper\u('board', 'show', array('project_id' => '%d')) ?>">
+                        <select id="board-selector" data-placeholder="<?= t('Display another project') ?>" data-board-url="<?= $this->u('board', 'show', array('project_id' => '%d')) ?>">
                             <option value=""></option>
                             <?php foreach($board_selector as $board_id => $board_name): ?>
-                                <option value="<?= $board_id ?>"><?= Helper\escape($board_name) ?></option>
+                                <option value="<?= $board_id ?>"><?= $this->e($board_name) ?></option>
                             <?php endforeach ?>
                         </select>
                     </li>
                     <?php endif ?>
                     <li>
-                        <?= Helper\a(t('Logout'), 'user', 'logout', array(), true) ?>
-                        <span class="username hide-tablet">(<?= Helper\a(Helper\escape(Helper\get_username()), 'user', 'show', array('user_id' => Helper\get_user_id())) ?>)</span>
+                        <?= $this->a(t('Logout'), 'user', 'logout', array(), true) ?>
+                        <span class="username hide-tablet">(<?= $this->a($this->e($this->getFullname()), 'user', 'show', array('user_id' => $this->acl->getUserId())) ?>)</span>
                     </li>
                 </ul>
             </nav>
         </header>
         <section class="page">
-            <?= Helper\flash('<div class="alert alert-success alert-fade-out">%s</div>') ?>
-            <?= Helper\flash_error('<div class="alert alert-error">%s</div>') ?>
+            <?= $this->flash('<div class="alert alert-success alert-fade-out">%s</div>') ?>
+            <?= $this->flashError('<div class="alert alert-error">%s</div>') ?>
             <?= $content_for_layout ?>
          </section>
      <?php endif ?>
diff --git a/app/Template/notification/comment_creation.php b/app/Template/notification/comment_creation.php
index 52f82a92..b28e261a 100644
--- a/app/Template/notification/comment_creation.php
+++ b/app/Template/notification/comment_creation.php
@@ -1,7 +1,7 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <h3><?= t('New comment posted by %s', $comment['name'] ?: $comment['username']) ?></h3>
 
-<?= Helper\markdown($comment['comment']) ?>
+<?= $this->markdown($comment['comment']) ?>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/comment_update.php b/app/Template/notification/comment_update.php
index 8f613eb2..88154f0b 100644
--- a/app/Template/notification/comment_update.php
+++ b/app/Template/notification/comment_update.php
@@ -1,7 +1,7 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <h3><?= t('Comment updated') ?></h3>
 
-<?= Helper\markdown($comment['comment']) ?>
+<?= $this->markdown($comment['comment']) ?>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/file_creation.php b/app/Template/notification/file_creation.php
index aae6fee9..63f7d1b8 100644
--- a/app/Template/notification/file_creation.php
+++ b/app/Template/notification/file_creation.php
@@ -1,5 +1,5 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <p><?= t('New attachment added "%s"', $file['name']) ?></p>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/subtask_creation.php b/app/Template/notification/subtask_creation.php
index b264ef49..e1c62b73 100644
--- a/app/Template/notification/subtask_creation.php
+++ b/app/Template/notification/subtask_creation.php
@@ -1,17 +1,17 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <h3><?= t('New sub-task') ?></h3>
 
 <ul>
-    <li><?= t('Title:') ?> <?= Helper\escape($subtask['title']) ?></li>
-    <li><?= t('Status:') ?> <?= Helper\escape($subtask['status_name']) ?></li>
-    <li><?= t('Assignee:') ?> <?= Helper\escape($subtask['name'] ?: $subtask['username'] ?: '?') ?></li>
+    <li><?= t('Title:') ?> <?= $this->e($subtask['title']) ?></li>
+    <li><?= t('Status:') ?> <?= $this->e($subtask['status_name']) ?></li>
+    <li><?= t('Assignee:') ?> <?= $this->e($subtask['name'] ?: $subtask['username'] ?: '?') ?></li>
     <li>
         <?= t('Time tracking:') ?>
         <?php if (! empty($subtask['time_estimated'])): ?>
-            <strong><?= Helper\escape($subtask['time_estimated']).'h' ?></strong> <?= t('estimated') ?>
+            <strong><?= $this->e($subtask['time_estimated']).'h' ?></strong> <?= t('estimated') ?>
         <?php endif ?>
     </li>
 </ul>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/subtask_update.php b/app/Template/notification/subtask_update.php
index 08b7d97f..cfde9db6 100644
--- a/app/Template/notification/subtask_update.php
+++ b/app/Template/notification/subtask_update.php
@@ -1,21 +1,21 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <h3><?= t('Sub-task updated') ?></h3>
 
 <ul>
-    <li><?= t('Title:') ?> <?= Helper\escape($subtask['title']) ?></li>
-    <li><?= t('Status:') ?> <?= Helper\escape($subtask['status_name']) ?></li>
-    <li><?= t('Assignee:') ?> <?= Helper\escape($subtask['name'] ?: $subtask['username'] ?: '?') ?></li>
+    <li><?= t('Title:') ?> <?= $this->e($subtask['title']) ?></li>
+    <li><?= t('Status:') ?> <?= $this->e($subtask['status_name']) ?></li>
+    <li><?= t('Assignee:') ?> <?= $this->e($subtask['name'] ?: $subtask['username'] ?: '?') ?></li>
     <li>
         <?= t('Time tracking:') ?>
         <?php if (! empty($subtask['time_spent'])): ?>
-            <strong><?= Helper\escape($subtask['time_spent']).'h' ?></strong> <?= t('spent') ?>
+            <strong><?= $this->e($subtask['time_spent']).'h' ?></strong> <?= t('spent') ?>
         <?php endif ?>
 
         <?php if (! empty($subtask['time_estimated'])): ?>
-            <strong><?= Helper\escape($subtask['time_estimated']).'h' ?></strong> <?= t('estimated') ?>
+            <strong><?= $this->e($subtask['time_estimated']).'h' ?></strong> <?= t('estimated') ?>
         <?php endif ?>
     </li>
 </ul>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_assignee_change.php b/app/Template/notification/task_assignee_change.php
index 14beef13..faab92f3 100644
--- a/app/Template/notification/task_assignee_change.php
+++ b/app/Template/notification/task_assignee_change.php
@@ -1,4 +1,4 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <ul>
     <li>
@@ -14,7 +14,7 @@
 
 <?php if (! empty($task['description'])): ?>
     <h2><?= t('Description') ?></h2>
-    <?= Helper\markdown($task['description']) ?: t('There is no description.') ?>
+    <?= $this->markdown($task['description']) ?: t('There is no description.') ?>
 <?php endif ?>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_close.php b/app/Template/notification/task_close.php
index 1a5ec553..463223a0 100644
--- a/app/Template/notification/task_close.php
+++ b/app/Template/notification/task_close.php
@@ -1,5 +1,5 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <p><?= t('The task #%d have been closed.', $task['id']) ?></p>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_creation.php b/app/Template/notification/task_creation.php
index 99ebcbe5..dfd3e591 100644
--- a/app/Template/notification/task_creation.php
+++ b/app/Template/notification/task_creation.php
@@ -1,4 +1,4 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <ul>
     <li>
@@ -25,19 +25,19 @@
     </li>
     <li>
         <?= t('Column on the board:') ?>
-        <strong><?= Helper\escape($task['column_title']) ?></strong>
+        <strong><?= $this->e($task['column_title']) ?></strong>
     </li>
-    <li><?= t('Task position:').' '.Helper\escape($task['position']) ?></li>
+    <li><?= t('Task position:').' '.$this->e($task['position']) ?></li>
     <?php if ($task['category_name']): ?>
     <li>
-        <?= t('Category:') ?> <strong><?= Helper\escape($task['category_name']) ?></strong>
+        <?= t('Category:') ?> <strong><?= $this->e($task['category_name']) ?></strong>
     </li>
     <?php endif ?>
 </ul>
 
 <?php if (! empty($task['description'])): ?>
     <h2><?= t('Description') ?></h2>
-    <?= Helper\markdown($task['description']) ?>
+    <?= $this->markdown($task['description']) ?>
 <?php endif ?>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_due.php b/app/Template/notification/task_due.php
index c7ea010f..066ada64 100644
--- a/app/Template/notification/task_due.php
+++ b/app/Template/notification/task_due.php
@@ -5,9 +5,9 @@
         <li>
             (<strong>#<?= $task['id'] ?></strong>)
             <?php if ($application_url): ?>
-                <a href="<?= $application_url.'?controller=task&action=show&task_id='.$task['id'] ?>"><?= Helper\escape($task['title']) ?></a>
+                <a href="<?= $application_url.'?controller=task&action=show&task_id='.$task['id'] ?>"><?= $this->e($task['title']) ?></a>
             <?php else: ?>
-                <?= Helper\escape($task['title']) ?>
+                <?= $this->e($task['title']) ?>
             <?php endif ?>
             (<?= dt('%B %e, %Y', $task['date_due']) ?>)
             <?php if ($task['assignee_username']): ?>
@@ -17,4 +17,4 @@
     <?php endforeach ?>
 </ul>
 
-<?= Helper\template('notification/footer', array('task' => $task)) ?>
+<?= $this->render('notification/footer', array('task' => $task)) ?>
diff --git a/app/Template/notification/task_move_column.php b/app/Template/notification/task_move_column.php
index 36f4daed..88ab8ab5 100644
--- a/app/Template/notification/task_move_column.php
+++ b/app/Template/notification/task_move_column.php
@@ -1,11 +1,11 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <ul>
     <li>
         <?= t('Column on the board:') ?>
-        <strong><?= Helper\escape($task['column_title']) ?></strong>
+        <strong><?= $this->e($task['column_title']) ?></strong>
     </li>
-    <li><?= t('Task position:').' '.Helper\escape($task['position']) ?></li>
+    <li><?= t('Task position:').' '.$this->e($task['position']) ?></li>
 </ul>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_move_position.php b/app/Template/notification/task_move_position.php
index 36f4daed..88ab8ab5 100644
--- a/app/Template/notification/task_move_position.php
+++ b/app/Template/notification/task_move_position.php
@@ -1,11 +1,11 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <ul>
     <li>
         <?= t('Column on the board:') ?>
-        <strong><?= Helper\escape($task['column_title']) ?></strong>
+        <strong><?= $this->e($task['column_title']) ?></strong>
     </li>
-    <li><?= t('Task position:').' '.Helper\escape($task['position']) ?></li>
+    <li><?= t('Task position:').' '.$this->e($task['position']) ?></li>
 </ul>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_open.php b/app/Template/notification/task_open.php
index 6ee10242..cb02a79c 100644
--- a/app/Template/notification/task_open.php
+++ b/app/Template/notification/task_open.php
@@ -1,5 +1,5 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <p><?= t('The task #%d have been opened.', $task['id']) ?></p>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/notification/task_update.php b/app/Template/notification/task_update.php
index cbd6b2e1..71e949dd 100644
--- a/app/Template/notification/task_update.php
+++ b/app/Template/notification/task_update.php
@@ -1,4 +1,4 @@
-<h2><?= Helper\escape($task['title']) ?> (#<?= $task['id'] ?>)</h2>
+<h2><?= $this->e($task['title']) ?> (#<?= $task['id'] ?>)</h2>
 
 <ul>
     <li>
@@ -25,19 +25,19 @@
     </li>
     <li>
         <?= t('Column on the board:') ?>
-        <strong><?= Helper\escape($task['column_title']) ?></strong>
+        <strong><?= $this->e($task['column_title']) ?></strong>
     </li>
-    <li><?= t('Task position:').' '.Helper\escape($task['position']) ?></li>
+    <li><?= t('Task position:').' '.$this->e($task['position']) ?></li>
     <?php if ($task['category_name']): ?>
     <li>
-        <?= t('Category:') ?> <strong><?= Helper\escape($task['category_name']) ?></strong>
+        <?= t('Category:') ?> <strong><?= $this->e($task['category_name']) ?></strong>
     </li>
     <?php endif ?>
 </ul>
 
 <?php if (! empty($task['description'])): ?>
     <h2><?= t('Description') ?></h2>
-    <?= Helper\markdown($task['description']) ?: t('There is no description.') ?>
+    <?= $this->markdown($task['description']) ?: t('There is no description.') ?>
 <?php endif ?>
 
-<?= Helper\template('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
+<?= $this->render('notification/footer', array('task' => $task, 'application_url' => $application_url)) ?>
\ No newline at end of file
diff --git a/app/Template/project/activity.php b/app/Template/project/activity.php
index 7cc69bfe..cb986658 100644
--- a/app/Template/project/activity.php
+++ b/app/Template/project/activity.php
@@ -1,15 +1,15 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-search fa-fw"></i><?= Helper\a(t('Search'), 'project', 'search', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-check-square-o fa-fw"></i><?= Helper\a(t('Completed tasks'), 'project', 'tasks', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-search fa-fw"></i><?= $this->a(t('Search'), 'project', 'search', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-check-square-o fa-fw"></i><?= $this->a(t('Completed tasks'), 'project', 'tasks', array('project_id' => $project['id'])) ?></li>
             <?php if ($project['is_public']): ?>
-                <li><i class="fa fa-rss-square fa-fw"></i><?= Helper\a(t('RSS feed'), 'project', 'feed', array('token' => $project['token']), false, '', '', true) ?></li>
+                <li><i class="fa fa-rss-square fa-fw"></i><?= $this->a(t('RSS feed'), 'project', 'feed', array('token' => $project['token']), false, '', '', true) ?></li>
             <?php endif ?>
         </ul>
     </div>
     <section>
-        <?= Helper\template('project/events', array('events' => $events)) ?>
+        <?= $this->render('project/events', array('events' => $events)) ?>
     </section>
 </section>
\ No newline at end of file
diff --git a/app/Template/project/disable.php b/app/Template/project/disable.php
index 7a729fa3..48a09a97 100644
--- a/app/Template/project/disable.php
+++ b/app/Template/project/disable.php
@@ -8,7 +8,7 @@
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'project', 'disable', array('project_id' => $project['id'], 'disable' => 'yes'), true, 'btn btn-red') ?>
-        <?= t('or') ?> <?= Helper\a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('Yes'), 'project', 'disable', array('project_id' => $project['id'], 'disable' => 'yes'), true, 'btn btn-red') ?>
+        <?= t('or') ?> <?= $this->a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/project/duplicate.php b/app/Template/project/duplicate.php
index a926dcd1..fc704b1e 100644
--- a/app/Template/project/duplicate.php
+++ b/app/Template/project/duplicate.php
@@ -8,7 +8,7 @@
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'project', 'duplicate', array('project_id' => $project['id'], 'duplicate' => 'yes'), true, 'btn btn-red') ?>
-        <?= t('or') ?> <?= Helper\a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('Yes'), 'project', 'duplicate', array('project_id' => $project['id'], 'duplicate' => 'yes'), true, 'btn btn-red') ?>
+        <?= t('or') ?> <?= $this->a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/project/edit.php b/app/Template/project/edit.php
index 8eb2110d..bb776a06 100644
--- a/app/Template/project/edit.php
+++ b/app/Template/project/edit.php
@@ -1,13 +1,13 @@
 <div class="page-header">
     <h2><?= t('Edit project') ?></h2>
 </div>
-<form method="post" action="<?= Helper\u('project', 'update', array('project_id' => $values['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('project', 'update', array('project_id' => $values['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('id', $values) ?>
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('id', $values) ?>
 
-    <?= Helper\form_label(t('Name'), 'name') ?>
-    <?= Helper\form_text('name', $values, $errors, array('required')) ?>
+    <?= $this->formLabel(t('Name'), 'name') ?>
+    <?= $this->formText('name', $values, $errors, array('required')) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
diff --git a/app/Template/project/enable.php b/app/Template/project/enable.php
index f2a1b0e7..b683ea7c 100644
--- a/app/Template/project/enable.php
+++ b/app/Template/project/enable.php
@@ -8,7 +8,7 @@
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'project', 'enable', array('project_id' => $project['id'], 'enable' => 'yes'), true, 'btn btn-red') ?>
-        <?= t('or') ?> <?= Helper\a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('Yes'), 'project', 'enable', array('project_id' => $project['id'], 'enable' => 'yes'), true, 'btn btn-red') ?>
+        <?= t('or') ?> <?= $this->a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/project/events.php b/app/Template/project/events.php
index 1b606414..93bc6584 100644
--- a/app/Template/project/events.php
+++ b/app/Template/project/events.php
@@ -5,11 +5,11 @@
     <?php foreach ($events as $event): ?>
         <div class="activity-event">
             <p class="activity-datetime">
-                <?php if (Helper\contains($event['event_name'], 'subtask')): ?>
+                <?php if ($this->contains($event['event_name'], 'subtask')): ?>
                     <i class="fa fa-tasks"></i>
-                <?php elseif (Helper\contains($event['event_name'], 'task')): ?>
+                <?php elseif ($this->contains($event['event_name'], 'task')): ?>
                     <i class="fa fa-newspaper-o"></i>
-                <?php elseif (Helper\contains($event['event_name'], 'comment')): ?>
+                <?php elseif ($this->contains($event['event_name'], 'comment')): ?>
                     <i class="fa fa-comments-o"></i>
                 <?php endif ?>
                 &nbsp;<?= dt('%B %e, %Y at %k:%M %p', $event['date_creation']) ?>
diff --git a/app/Template/project/export_daily_summary.php b/app/Template/project/export_daily_summary.php
index 763cd81c..191d36b6 100644
--- a/app/Template/project/export_daily_summary.php
+++ b/app/Template/project/export_daily_summary.php
@@ -8,15 +8,15 @@
 
 <form method="get" action="?" autocomplete="off">
 
-    <?= Helper\form_hidden('controller', $values) ?>
-    <?= Helper\form_hidden('action', $values) ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formHidden('controller', $values) ?>
+    <?= $this->formHidden('action', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Start Date'), 'from') ?>
-    <?= Helper\form_text('from', $values, $errors, array('required', 'placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?><br/>
+    <?= $this->formLabel(t('Start Date'), 'from') ?>
+    <?= $this->formText('from', $values, $errors, array('required', 'placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?><br/>
 
-    <?= Helper\form_label(t('End Date'), 'to') ?>
-    <?= Helper\form_text('to', $values, $errors, array('required', 'placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?>
+    <?= $this->formLabel(t('End Date'), 'to') ?>
+    <?= $this->formText('to', $values, $errors, array('required', 'placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?>
 
     <div class="form-help"><?= t('Others formats accepted: %s and %s', date('Y-m-d'), date('Y_m_d')) ?></div>
 
diff --git a/app/Template/project/export_tasks.php b/app/Template/project/export_tasks.php
index 02eb389f..e502085c 100644
--- a/app/Template/project/export_tasks.php
+++ b/app/Template/project/export_tasks.php
@@ -6,15 +6,15 @@
 
 <form method="get" action="?" autocomplete="off">
 
-    <?= Helper\form_hidden('controller', $values) ?>
-    <?= Helper\form_hidden('action', $values) ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formHidden('controller', $values) ?>
+    <?= $this->formHidden('action', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Start Date'), 'from') ?>
-    <?= Helper\form_text('from', $values, $errors, array('required', 'placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?><br/>
+    <?= $this->formLabel(t('Start Date'), 'from') ?>
+    <?= $this->formText('from', $values, $errors, array('required', 'placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?><br/>
 
-    <?= Helper\form_label(t('End Date'), 'to') ?>
-    <?= Helper\form_text('to', $values, $errors, array('required', 'placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?>
+    <?= $this->formLabel(t('End Date'), 'to') ?>
+    <?= $this->formText('to', $values, $errors, array('required', 'placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?>
 
     <div class="form-help"><?= t('Others formats accepted: %s and %s', date('Y-m-d'), date('Y_m_d')) ?></div>
 
diff --git a/app/Template/project/feed.php b/app/Template/project/feed.php
index 9d10ecb1..14427af9 100644
--- a/app/Template/project/feed.php
+++ b/app/Template/project/feed.php
@@ -1,21 +1,21 @@
 <?= '<?xml version="1.0" encoding="utf-8"?>' ?>
 <feed xml:lang="en-US" xmlns="http://www.w3.org/2005/Atom">
     <title><?= t('%s\'s activity', $project['name']) ?></title>
-    <link rel="alternate" type="text/html" href="<?= Helper\get_current_base_url() ?>"/>
-    <link rel="self" type="application/atom+xml" href="<?= Helper\get_current_base_url().Helper\u('project', 'feed', array('token' => $project['token'])) ?>"/>
+    <link rel="alternate" type="text/html" href="<?= $this->getCurrentBaseUrl() ?>"/>
+    <link rel="self" type="application/atom+xml" href="<?= $this->getCurrentBaseUrl().$this->u('project', 'feed', array('token' => $project['token'])) ?>"/>
     <updated><?= date(DATE_ATOM) ?></updated>
-    <id><?= Helper\get_current_base_url() ?></id>
-    <icon><?= Helper\get_current_base_url() ?>assets/img/favicon.png</icon>
+    <id><?= $this->getCurrentBaseUrl() ?></id>
+    <icon><?= $this->getCurrentBaseUrl() ?>assets/img/favicon.png</icon>
 
     <?php foreach ($events as $e): ?>
     <entry>
         <title type="text"><?= $e['event_title'] ?></title>
-        <link rel="alternate" href="<?= Helper\get_current_base_url().Helper\u('task', 'show', array('task_id' => $e['task_id'])) ?>"/>
+        <link rel="alternate" href="<?= $this->getCurrentBaseUrl().$this->u('task', 'show', array('task_id' => $e['task_id'])) ?>"/>
         <id><?= $e['id'].'-'.$e['event_name'].'-'.$e['task_id'].'-'.$e['date_creation'] ?></id>
         <published><?= date(DATE_ATOM, $e['date_creation']) ?></published>
         <updated><?= date(DATE_ATOM, $e['date_creation']) ?></updated>
         <author>
-            <name><?= Helper\escape($e['author']) ?></name>
+            <name><?= $this->e($e['author']) ?></name>
         </author>
         <content type="html">
             <![CDATA[
diff --git a/app/Template/project/index.php b/app/Template/project/index.php
index 6c04449e..4f07a83a 100644
--- a/app/Template/project/index.php
+++ b/app/Template/project/index.php
@@ -1,10 +1,10 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <?php if (Helper\is_admin()): ?>
-                <li><i class="fa fa-plus fa-fw"></i><?= Helper\a(t('New project'), 'project', 'create') ?></li>
+            <?php if ($this->acl->isAdminUser()): ?>
+                <li><i class="fa fa-plus fa-fw"></i><?= $this->a(t('New project'), 'project', 'create') ?></li>
             <?php endif ?>
-            <li><i class="fa fa-lock fa-fw"></i><?= Helper\a(t('New private project'), 'project', 'create', array('private' => 1)) ?></li>
+            <li><i class="fa fa-lock fa-fw"></i><?= $this->a(t('New private project'), 'project', 'create', array('private' => 1)) ?></li>
         </ul>
     </div>
     <section>
@@ -23,7 +23,7 @@
                         <?php if ($project['is_private']): ?>
                             <i class="fa fa-lock fa-fw"></i>
                         <?php endif ?>
-                        <?= Helper\a(Helper\escape($project['name']), 'project', 'show', array('project_id' => $project['id'])) ?>
+                        <?= $this->a($this->e($project['name']), 'project', 'show', array('project_id' => $project['id'])) ?>
                     </li>
                 <?php endforeach ?>
             </ul>
@@ -37,7 +37,7 @@
                         <?php if ($project['is_private']): ?>
                             <i class="fa fa-lock"></i>
                         <?php endif ?>
-                        <?= Helper\a(Helper\escape($project['name']), 'project', 'show', array('project_id' => $project['id'])) ?>
+                        <?= $this->a($this->e($project['name']), 'project', 'show', array('project_id' => $project['id'])) ?>
                     </li>
                 <?php endforeach ?>
             </ul>
diff --git a/app/Template/project/layout.php b/app/Template/project/layout.php
index 19fe32b9..0db9f3e8 100644
--- a/app/Template/project/layout.php
+++ b/app/Template/project/layout.php
@@ -1,13 +1,13 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-folder fa-fw"></i><?= Helper\a(t('All projects'), 'project', 'index') ?></li>
+            <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-folder fa-fw"></i><?= $this->a(t('All projects'), 'project', 'index') ?></li>
         </ul>
     </div>
     <section class="sidebar-container" id="project-section">
 
-        <?= Helper\template('project/sidebar', array('project' => $project, 'is_owner' => $is_owner)) ?>
+        <?= $this->render('project/sidebar', array('project' => $project, 'is_owner' => $is_owner)) ?>
 
         <div class="sidebar-content">
             <?= $project_content_for_layout ?>
diff --git a/app/Template/project/new.php b/app/Template/project/new.php
index f3926a65..91db75e1 100644
--- a/app/Template/project/new.php
+++ b/app/Template/project/new.php
@@ -1,20 +1,20 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-folder fa-fw"></i><?= Helper\a(t('All projects'), 'project', 'index') ?></li>
+            <li><i class="fa fa-folder fa-fw"></i><?= $this->a(t('All projects'), 'project', 'index') ?></li>
         </ul>
     </div>
     <section>
-    <form method="post" action="<?= Helper\u('project', 'save') ?>" autocomplete="off">
+    <form method="post" action="<?= $this->u('project', 'save') ?>" autocomplete="off">
 
-        <?= Helper\form_csrf() ?>
-        <?= Helper\form_hidden('is_private', $values) ?>
-        <?= Helper\form_label(t('Name'), 'name') ?>
-        <?= Helper\form_text('name', $values, $errors, array('autofocus', 'required')) ?>
+        <?= $this->formCsrf() ?>
+        <?= $this->formHidden('is_private', $values) ?>
+        <?= $this->formLabel(t('Name'), 'name') ?>
+        <?= $this->formText('name', $values, $errors, array('autofocus', 'required')) ?>
 
         <div class="form-actions">
             <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
-            <?= t('or') ?> <?= Helper\a(t('cancel'), 'project', 'index') ?>
+            <?= t('or') ?> <?= $this->a(t('cancel'), 'project', 'index') ?>
         </div>
     </form>
     </section>
diff --git a/app/Template/project/remove.php b/app/Template/project/remove.php
index a98f94eb..0f6fec78 100644
--- a/app/Template/project/remove.php
+++ b/app/Template/project/remove.php
@@ -8,7 +8,7 @@
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'project', 'remove', array('project_id' => $project['id'], 'remove' => 'yes'), true, 'btn btn-red') ?>
-        <?= t('or') ?> <?= Helper\a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
+        <?= $this->a(t('Yes'), 'project', 'remove', array('project_id' => $project['id'], 'remove' => 'yes'), true, 'btn btn-red') ?>
+        <?= t('or') ?> <?= $this->a(t('cancel'), 'project', 'show', array('project_id' => $project['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/project/search.php b/app/Template/project/search.php
index 3bad43e3..c8a3e410 100644
--- a/app/Template/project/search.php
+++ b/app/Template/project/search.php
@@ -1,24 +1,24 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-check-square-o fa-fw"></i><?= Helper\a(t('Completed tasks'), 'project', 'tasks', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-dashboard fa-fw"></i><?= Helper\a(t('Activity'), 'project', 'activity', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-check-square-o fa-fw"></i><?= $this->a(t('Completed tasks'), 'project', 'tasks', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-dashboard fa-fw"></i><?= $this->a(t('Activity'), 'project', 'activity', array('project_id' => $project['id'])) ?></li>
         </ul>
     </div>
     <section>
     <form method="get" action="?" autocomplete="off">
-        <?= Helper\form_hidden('controller', $values) ?>
-        <?= Helper\form_hidden('action', $values) ?>
-        <?= Helper\form_hidden('project_id', $values) ?>
-        <?= Helper\form_text('search', $values, array(), array('autofocus', 'required', 'placeholder="'.t('Search').'"'), 'form-input-large') ?>
+        <?= $this->formHidden('controller', $values) ?>
+        <?= $this->formHidden('action', $values) ?>
+        <?= $this->formHidden('project_id', $values) ?>
+        <?= $this->formText('search', $values, array(), array('autofocus', 'required', 'placeholder="'.t('Search').'"'), 'form-input-large') ?>
         <input type="submit" value="<?= t('Search') ?>" class="btn btn-blue"/>
     </form>
 
     <?php if (empty($tasks) && ! empty($values['search'])): ?>
         <p class="alert"><?= t('Nothing found.') ?></p>
     <?php elseif (! empty($tasks)): ?>
-        <?= Helper\template('task/table', array(
+        <?= $this->render('task/table', array(
             'tasks' => $tasks,
             'categories' => $categories,
             'columns' => $columns,
diff --git a/app/Template/project/share.php b/app/Template/project/share.php
index 10155492..7c490008 100644
--- a/app/Template/project/share.php
+++ b/app/Template/project/share.php
@@ -6,14 +6,14 @@
 
     <div class="listing">
         <ul class="no-bullet">
-            <li><strong><i class="fa fa-share-alt"></i> <?= Helper\a(t('Public link'), 'board', 'readonly', array('token' => $project['token']), false, '', '', true) ?></strong></li>
-            <li><strong><i class="fa fa-rss-square"></i> <?= Helper\a(t('RSS feed'), 'project', 'feed', array('token' => $project['token']), false, '', '', true) ?></strong></li>
+            <li><strong><i class="fa fa-share-alt"></i> <?= $this->a(t('Public link'), 'board', 'readonly', array('token' => $project['token']), false, '', '', true) ?></strong></li>
+            <li><strong><i class="fa fa-rss-square"></i> <?= $this->a(t('RSS feed'), 'project', 'feed', array('token' => $project['token']), false, '', '', true) ?></strong></li>
         </ul>
-        <input type="text" class="auto-select" readonly="readonly" value="<?= Helper\get_current_base_url().Helper\u('board', 'readonly', array('token' => $project['token'])) ?>"/>
+        <input type="text" class="auto-select" readonly="readonly" value="<?= $this->getCurrentBaseUrl().$this->u('board', 'readonly', array('token' => $project['token'])) ?>"/>
     </div>
 
-    <?= Helper\a(t('Disable public access'), 'project', 'share', array('project_id' => $project['id'], 'switch' => 'disable'), true, 'btn btn-red') ?>
+    <?= $this->a(t('Disable public access'), 'project', 'share', array('project_id' => $project['id'], 'switch' => 'disable'), true, 'btn btn-red') ?>
 
 <?php else: ?>
-    <?= Helper\a(t('Enable public access'), 'project', 'share', array('project_id' => $project['id'], 'switch' => 'enable'), true, 'btn btn-blue') ?>
+    <?= $this->a(t('Enable public access'), 'project', 'share', array('project_id' => $project['id'], 'switch' => 'enable'), true, 'btn btn-blue') ?>
 <?php endif ?>
diff --git a/app/Template/project/show.php b/app/Template/project/show.php
index bdb46ee3..22d710e6 100644
--- a/app/Template/project/show.php
+++ b/app/Template/project/show.php
@@ -9,8 +9,8 @@
     <?php endif ?>
 
     <?php if ($project['is_public']): ?>
-        <li><i class="fa fa-share-alt"></i> <?= Helper\a(t('Public link'), 'board', 'readonly', array('token' => $project['token']), false, '', '', true) ?></li>
-        <li><i class="fa fa-rss-square"></i> <?= Helper\a(t('RSS feed'), 'project', 'feed', array('token' => $project['token']), false, '', '', true) ?></li>
+        <li><i class="fa fa-share-alt"></i> <?= $this->a(t('Public link'), 'board', 'readonly', array('token' => $project['token']), false, '', '', true) ?></li>
+        <li><i class="fa fa-rss-square"></i> <?= $this->a(t('RSS feed'), 'project', 'feed', array('token' => $project['token']), false, '', '', true) ?></li>
     <?php else: ?>
         <li><?= t('Public access disabled') ?></li>
     <?php endif ?>
@@ -22,11 +22,11 @@
     <?php if ($stats['nb_tasks'] > 0): ?>
 
         <?php if ($stats['nb_active_tasks'] > 0): ?>
-            <li><?= Helper\a(t('%d tasks on the board', $stats['nb_active_tasks']), 'board', 'show', array('project_id' => $project['id'])) ?></li>
+            <li><?= $this->a(t('%d tasks on the board', $stats['nb_active_tasks']), 'board', 'show', array('project_id' => $project['id'])) ?></li>
         <?php endif ?>
 
         <?php if ($stats['nb_inactive_tasks'] > 0): ?>
-            <li><?= Helper\a(t('%d closed tasks', $stats['nb_inactive_tasks']), 'project', 'tasks', array('project_id' => $project['id'])) ?></li>
+            <li><?= $this->a(t('%d closed tasks', $stats['nb_inactive_tasks']), 'project', 'tasks', array('project_id' => $project['id'])) ?></li>
         <?php endif ?>
 
         <li><?= t('%d tasks in total', $stats['nb_tasks']) ?></li>
@@ -47,20 +47,20 @@
     </tr>
     <?php foreach ($stats['columns'] as $column): ?>
     <tr>
-        <td><?= Helper\escape($column['title']) ?></td>
+        <td><?= $this->e($column['title']) ?></td>
         <td><?= $column['task_limit'] ?: '∞' ?></td>
         <td><?= $column['nb_active_tasks'] ?></td>
     </tr>
     <?php endforeach ?>
 </table>
 
-<?php if (Helper\is_admin()): ?>
+<?php if ($this->acl->isAdminUser()): ?>
 <div class="page-header">
     <h2><?= t('Integration') ?></h2>
 </div>
 
 <h3><i class="fa fa-github fa-fw"></i><?= t('Github webhook') ?></h3>
-<input type="text" class="auto-select" readonly="readonly" value="<?= Helper\get_current_base_url().Helper\u('webhook', 'github', array('token' => $webhook_token, 'project_id' => $project['id'])) ?>"/><br/>
+<input type="text" class="auto-select" readonly="readonly" value="<?= $this->getCurrentBaseUrl().$this->u('webhook', 'github', array('token' => $webhook_token, 'project_id' => $project['id'])) ?>"/><br/>
 <p class="form-help"><a href="http://kanboard.net/documentation/github-webhooks" target="_blank"><?= t('Help on Github webhook') ?></a></p>
 
 <?php endif ?>
diff --git a/app/Template/project/sidebar.php b/app/Template/project/sidebar.php
index 5107451a..35019fdb 100644
--- a/app/Template/project/sidebar.php
+++ b/app/Template/project/sidebar.php
@@ -2,61 +2,61 @@
     <h2><?= t('Actions') ?></h2>
     <ul>
         <li>
-            <?= Helper\a(t('Summary'), 'project', 'show', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Summary'), 'project', 'show', array('project_id' => $project['id'])) ?>
         </li>
 
-        <?php if (Helper\is_admin() || $project['is_private']): ?>
+        <?php if ($this->acl->isAdminUser() || $project['is_private']): ?>
         <li>
-            <?= Helper\a(t('Public access'), 'project', 'share', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Public access'), 'project', 'share', array('project_id' => $project['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Edit project'), 'project', 'edit', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Edit project'), 'project', 'edit', array('project_id' => $project['id'])) ?>
         </li>
         <?php endif ?>
-        <?php if (Helper\is_admin() || $is_owner || $project['is_private']): ?>
+        <?php if ($this->acl->isAdminUser() || $is_owner || $project['is_private']): ?>
             <li>
-                <?= Helper\a(t('Edit board'), 'board', 'edit', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('Edit board'), 'board', 'edit', array('project_id' => $project['id'])) ?>
             </li>
             <li>
-                <?= Helper\a(t('Category management'), 'category', 'index', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('Category management'), 'category', 'index', array('project_id' => $project['id'])) ?>
             </li>
             <li>
-                <?= Helper\a(t('Swimlanes'), 'swimlane', 'index', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('Swimlanes'), 'swimlane', 'index', array('project_id' => $project['id'])) ?>
             </li>
             <?php if ($project['is_private'] == 0): ?>
             <li>
-                <?= Helper\a(t('User management'), 'project', 'users', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('User management'), 'project', 'users', array('project_id' => $project['id'])) ?>
             </li>
             <?php endif ?>
             <li>
-                <?= Helper\a(t('Automatic actions'), 'action', 'index', array('project_id' => $project['id'])) ?>
+                <?= $this->a(t('Automatic actions'), 'action', 'index', array('project_id' => $project['id'])) ?>
             </li>
         <?php endif ?>
-        <?php if (Helper\is_admin() || $project['is_private']): ?>
+        <?php if ($this->acl->isAdminUser() || $project['is_private']): ?>
         <li>
-            <?= Helper\a(t('Duplicate'), 'project', 'duplicate', array('project_id' => $project['id']), true) ?>
+            <?= $this->a(t('Duplicate'), 'project', 'duplicate', array('project_id' => $project['id']), true) ?>
         </li>
         <li>
             <?php if ($project['is_active']): ?>
-                <?= Helper\a(t('Disable'), 'project', 'disable', array('project_id' => $project['id']), true) ?>
+                <?= $this->a(t('Disable'), 'project', 'disable', array('project_id' => $project['id']), true) ?>
             <?php else: ?>
-                <?= Helper\a(t('Enable'), 'project', 'enable', array('project_id' => $project['id']), true) ?>
+                <?= $this->a(t('Enable'), 'project', 'enable', array('project_id' => $project['id']), true) ?>
             <?php endif ?>
         </li>
         <li>
-            <?= Helper\a(t('Remove'), 'project', 'remove', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Remove'), 'project', 'remove', array('project_id' => $project['id'])) ?>
         </li>
         <?php endif ?>
     </ul>
 
-    <?php if (Helper\is_admin() || $project['is_private']): ?>
+    <?php if ($this->acl->isAdminUser() || $project['is_private']): ?>
     <h2><?= t('Exports') ?></h2>
     <ul>
         <li>
-            <?= Helper\a(t('Tasks'), 'project', 'exportTasks', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Tasks'), 'project', 'exportTasks', array('project_id' => $project['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Daily project summary'), 'project', 'exportDailyProjectSummary', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('Daily project summary'), 'project', 'exportDailyProjectSummary', array('project_id' => $project['id'])) ?>
         </li>
     </ul>
     <?php endif ?>
diff --git a/app/Template/project/tasks.php b/app/Template/project/tasks.php
index 6fe20c38..6ca24acf 100644
--- a/app/Template/project/tasks.php
+++ b/app/Template/project/tasks.php
@@ -1,16 +1,16 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-search fa-fw"></i><?= Helper\a(t('Search'), 'project', 'search', array('project_id' => $project['id'])) ?></li>
-            <li><i class="fa fa-dashboard fa-fw"></i><?= Helper\a(t('Activity'), 'project', 'activity', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-search fa-fw"></i><?= $this->a(t('Search'), 'project', 'search', array('project_id' => $project['id'])) ?></li>
+            <li><i class="fa fa-dashboard fa-fw"></i><?= $this->a(t('Activity'), 'project', 'activity', array('project_id' => $project['id'])) ?></li>
         </ul>
     </div>
     <section>
     <?php if (empty($tasks)): ?>
         <p class="alert"><?= t('No task') ?></p>
     <?php else: ?>
-        <?= Helper\template('task/table', array(
+        <?= $this->render('task/table', array(
             'tasks' => $tasks,
             'categories' => $categories,
             'columns' => $columns,
diff --git a/app/Template/project/users.php b/app/Template/project/users.php
index 691fe9fd..ac27237c 100644
--- a/app/Template/project/users.php
+++ b/app/Template/project/users.php
@@ -14,17 +14,17 @@
         <ul>
         <?php foreach ($users['allowed'] as $user_id => $username): ?>
             <li>
-                <strong><?= Helper\escape($username) ?></strong>
+                <strong><?= $this->e($username) ?></strong>
                 <?php $is_owner = array_key_exists($user_id, $users['owners']);
                       if ($is_owner): ?> [owner] <?php endif ?>
                 <?php if ($project['is_private'] == 0): ?>
                     <?php if ($is_owner): ?>
-                        (<a href=<?= Helper\u('project', 'setOwner', array('project_id' => $project['id'], 'user_id' => $user_id, 'is_owner' => 0), true) ?> ><?= t('set user') ?></a>
+                        (<a href=<?= $this->u('project', 'setOwner', array('project_id' => $project['id'], 'user_id' => $user_id, 'is_owner' => 0), true) ?> ><?= t('set user') ?></a>
                     <?php else: ?>
-                        (<a href=<?= Helper\u('project', 'setOwner', array('project_id' => $project['id'], 'user_id' => $user_id, 'is_owner' => 1), true) ?> ><?= t('set manager') ?></a>
+                        (<a href=<?= $this->u('project', 'setOwner', array('project_id' => $project['id'], 'user_id' => $user_id, 'is_owner' => 1), true) ?> ><?= t('set manager') ?></a>
                     <?php endif ?>
                     or
-                    <?= Helper\a(t('revoke'), 'project', 'revoke', array('project_id' => $project['id'], 'user_id' => $user_id), true) ?>)
+                    <?= $this->a(t('revoke'), 'project', 'revoke', array('project_id' => $project['id'], 'user_id' => $user_id), true) ?>)
                 <?php endif ?>
             </li>
         <?php endforeach ?>
@@ -35,14 +35,14 @@
 
     <?php if ($project['is_private'] == 0 && ! empty($users['not_allowed'])): ?>
         <hr/>
-        <form method="post" action="<?= Helper\u('project', 'allow', array('project_id' => $project['id'])) ?>" autocomplete="off">
+        <form method="post" action="<?= $this->u('project', 'allow', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-            <?= Helper\form_csrf() ?>
+            <?= $this->formCsrf() ?>
 
-            <?= Helper\form_hidden('project_id', array('project_id' => $project['id'])) ?>
+            <?= $this->formHidden('project_id', array('project_id' => $project['id'])) ?>
 
-            <?= Helper\form_label(t('User'), 'user_id') ?>
-            <?= Helper\form_select('user_id', $users['not_allowed']) ?><br/>
+            <?= $this->formLabel(t('User'), 'user_id') ?>
+            <?= $this->formSelect('user_id', $users['not_allowed']) ?><br/>
 
             <div class="form-actions">
                 <input type="submit" value="<?= t('Allow this user') ?>" class="btn btn-blue"/>
@@ -54,11 +54,11 @@
 
 <?php if ($project['is_private'] == 0): ?>
 <hr/>
-<form method="post" action="<?= Helper\u('project', 'allowEverybody', array('project_id' => $project['id'])) ?>">
-    <?= Helper\form_csrf() ?>
+<form method="post" action="<?= $this->u('project', 'allowEverybody', array('project_id' => $project['id'])) ?>">
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('id', array('id' => $project['id'])) ?>
-    <?= Helper\form_checkbox('is_everybody_allowed', t('Allow everybody to access to this project'), 1, $project['is_everybody_allowed']) ?>
+    <?= $this->formHidden('id', array('id' => $project['id'])) ?>
+    <?= $this->formCheckbox('is_everybody_allowed', t('Allow everybody to access to this project'), 1, $project['is_everybody_allowed']) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
diff --git a/app/Template/subtask/create.php b/app/Template/subtask/create.php
index 40a6da3d..ba550aea 100644
--- a/app/Template/subtask/create.php
+++ b/app/Template/subtask/create.php
@@ -2,26 +2,26 @@
     <h2><?= t('Add a sub-task') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('subtask', 'save', array('task_id' => $task['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('subtask', 'save', array('task_id' => $task['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('task_id', $values) ?>
+    <?= $this->formHidden('task_id', $values) ?>
 
-    <?= Helper\form_label(t('Title'), 'title') ?>
-    <?= Helper\form_text('title', $values, $errors, array('required autofocus')) ?><br/>
+    <?= $this->formLabel(t('Title'), 'title') ?>
+    <?= $this->formText('title', $values, $errors, array('required autofocus')) ?><br/>
 
-    <?= Helper\form_label(t('Assignee'), 'user_id') ?>
-    <?= Helper\form_select('user_id', $users_list, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Assignee'), 'user_id') ?>
+    <?= $this->formSelect('user_id', $users_list, $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Original estimate'), 'time_estimated') ?>
-    <?= Helper\form_numeric('time_estimated', $values, $errors) ?> <?= t('hours') ?><br/>
+    <?= $this->formLabel(t('Original estimate'), 'time_estimated') ?>
+    <?= $this->formNumeric('time_estimated', $values, $errors) ?> <?= t('hours') ?><br/>
 
-    <?= Helper\form_checkbox('another_subtask', t('Create another sub-task'), 1, isset($values['another_subtask']) && $values['another_subtask'] == 1) ?>
+    <?= $this->formCheckbox('another_subtask', t('Create another sub-task'), 1, isset($values['another_subtask']) && $values['another_subtask'] == 1) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </form>
diff --git a/app/Template/subtask/edit.php b/app/Template/subtask/edit.php
index 88ea6175..76a04e45 100644
--- a/app/Template/subtask/edit.php
+++ b/app/Template/subtask/edit.php
@@ -2,31 +2,31 @@
     <h2><?= t('Edit a sub-task') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('subtask', 'update', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('subtask', 'update', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('id', $values) ?>
-    <?= Helper\form_hidden('task_id', $values) ?>
+    <?= $this->formHidden('id', $values) ?>
+    <?= $this->formHidden('task_id', $values) ?>
 
-    <?= Helper\form_label(t('Title'), 'title') ?>
-    <?= Helper\form_text('title', $values, $errors, array('required autofocus')) ?><br/>
+    <?= $this->formLabel(t('Title'), 'title') ?>
+    <?= $this->formText('title', $values, $errors, array('required autofocus')) ?><br/>
 
-    <?= Helper\form_label(t('Status'), 'status') ?>
-    <?= Helper\form_select('status', $status_list, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Status'), 'status') ?>
+    <?= $this->formSelect('status', $status_list, $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Assignee'), 'user_id') ?>
-    <?= Helper\form_select('user_id', $users_list, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Assignee'), 'user_id') ?>
+    <?= $this->formSelect('user_id', $users_list, $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Original estimate'), 'time_estimated') ?>
-    <?= Helper\form_numeric('time_estimated', $values, $errors) ?> <?= t('hours') ?><br/>
+    <?= $this->formLabel(t('Original estimate'), 'time_estimated') ?>
+    <?= $this->formNumeric('time_estimated', $values, $errors) ?> <?= t('hours') ?><br/>
 
-    <?= Helper\form_label(t('Time spent'), 'time_spent') ?>
-    <?= Helper\form_numeric('time_spent', $values, $errors) ?> <?= t('hours') ?><br/>
+    <?= $this->formLabel(t('Time spent'), 'time_spent') ?>
+    <?= $this->formNumeric('time_spent', $values, $errors) ?> <?= t('hours') ?><br/>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </form>
diff --git a/app/Template/subtask/remove.php b/app/Template/subtask/remove.php
index 74245a7a..3d57ec9d 100644
--- a/app/Template/subtask/remove.php
+++ b/app/Template/subtask/remove.php
@@ -7,11 +7,11 @@
         <?= t('Do you really want to remove this sub-task?') ?>
     </p>
 
-    <p><strong><?= Helper\escape($subtask['title']) ?></strong></p>
+    <p><strong><?= $this->e($subtask['title']) ?></strong></p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'subtask', 'remove', array('task_id' => $task['id'], 'subtask_id' => $subtask['id']), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'subtask', 'remove', array('task_id' => $task['id'], 'subtask_id' => $subtask['id']), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/subtask/show.php b/app/Template/subtask/show.php
index 4d341f26..d0b3a606 100644
--- a/app/Template/subtask/show.php
+++ b/app/Template/subtask/show.php
@@ -17,34 +17,34 @@
         </tr>
         <?php foreach ($subtasks as $subtask): ?>
         <tr>
-            <td><?= Helper\escape($subtask['title']) ?></td>
+            <td><?= $this->e($subtask['title']) ?></td>
             <td>
                 <?php if (! isset($not_editable)): ?>
-                    <?= Helper\a(trim(Helper\template('subtask/icons', array('subtask' => $subtask))) . Helper\escape($subtask['status_name']),
+                    <?= $this->a(trim($this->render('subtask/icons', array('subtask' => $subtask))) . $this->e($subtask['status_name']),
                                  'subtask', 'toggleStatus', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>
                 <?php else: ?>
-                    <?= Helper\template('subtask/icons', array('subtask' => $subtask)) . Helper\escape($subtask['status_name']) ?>
+                    <?= $this->render('subtask/icons', array('subtask' => $subtask)) . $this->e($subtask['status_name']) ?>
                 <?php endif ?>
             </td>
             <td>
                 <?php if (! empty($subtask['username'])): ?>
-                    <?= Helper\escape($subtask['name'] ?: $subtask['username']) ?>
+                    <?= $this->e($subtask['name'] ?: $subtask['username']) ?>
                 <?php endif ?>
             </td>
             <td>
                 <?php if (! empty($subtask['time_spent'])): ?>
-                    <strong><?= Helper\escape($subtask['time_spent']).'h' ?></strong> <?= t('spent') ?>
+                    <strong><?= $this->e($subtask['time_spent']).'h' ?></strong> <?= t('spent') ?>
                 <?php endif ?>
 
                 <?php if (! empty($subtask['time_estimated'])): ?>
-                    <strong><?= Helper\escape($subtask['time_estimated']).'h' ?></strong> <?= t('estimated') ?>
+                    <strong><?= $this->e($subtask['time_estimated']).'h' ?></strong> <?= t('estimated') ?>
                 <?php endif ?>
             </td>
             <?php if (! isset($not_editable)): ?>
                 <td>
-                    <?= Helper\a(t('Edit'), 'subtask', 'edit', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>
+                    <?= $this->a(t('Edit'), 'subtask', 'edit', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>
                     <?= t('or') ?>
-                    <?= Helper\a(t('Remove'), 'subtask', 'confirm', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>
+                    <?= $this->a(t('Remove'), 'subtask', 'confirm', array('task_id' => $task['id'], 'subtask_id' => $subtask['id'])) ?>
                 </td>
             <?php endif ?>
         </tr>
@@ -52,10 +52,10 @@
     </table>
 
     <?php if (! isset($not_editable)): ?>
-        <form method="post" action="<?= Helper\u('subtask', 'save', array('task_id' => $task['id'])) ?>" autocomplete="off">
-            <?= Helper\form_csrf() ?>
-            <?= Helper\form_hidden('task_id', array('task_id' => $task['id'])) ?>
-            <?= Helper\form_text('title', array(), array(), array('required', 'placeholder="'.t('Type here to create a new sub-task').'"')) ?>
+        <form method="post" action="<?= $this->u('subtask', 'save', array('task_id' => $task['id'])) ?>" autocomplete="off">
+            <?= $this->formCsrf() ?>
+            <?= $this->formHidden('task_id', array('task_id' => $task['id'])) ?>
+            <?= $this->formText('title', array(), array(), array('required', 'placeholder="'.t('Type here to create a new sub-task').'"')) ?>
             <input type="submit" value="<?= t('Add') ?>" class="btn btn-blue"/>
         </form>
     <?php endif ?>
diff --git a/app/Template/swimlane/edit.php b/app/Template/swimlane/edit.php
index fca555f7..ea842f31 100644
--- a/app/Template/swimlane/edit.php
+++ b/app/Template/swimlane/edit.php
@@ -2,15 +2,15 @@
     <h2><?= t('Swimlane modification for the project "%s"', $project['name']) ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('swimlane', 'update', array('project_id' => $project['id'], 'swimlane_id' => $values['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('swimlane', 'update', array('project_id' => $project['id'], 'swimlane_id' => $values['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('id', $values) ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formHidden('id', $values) ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Name'), 'name') ?>
-    <?= Helper\form_text('name', $values, $errors, array('autofocus required')) ?>
+    <?= $this->formLabel(t('Name'), 'name') ?>
+    <?= $this->formText('name', $values, $errors, array('autofocus required')) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
diff --git a/app/Template/swimlane/index.php b/app/Template/swimlane/index.php
index ec822c15..2bcddf75 100644
--- a/app/Template/swimlane/index.php
+++ b/app/Template/swimlane/index.php
@@ -2,19 +2,19 @@
 <div class="page-header">
     <h2><?= t('Active swimlanes') ?></h2>
 </div>
-<?= Helper\template('swimlane/table', array('swimlanes' => $active_swimlanes, 'project' => $project)) ?>
+<?= $this->render('swimlane/table', array('swimlanes' => $active_swimlanes, 'project' => $project)) ?>
 <?php endif ?>
 
 <div class="page-header">
     <h2><?= t('Add a new swimlane') ?></h2>
 </div>
-<form method="post" action="<?= Helper\u('swimlane', 'save', array('project_id' => $project['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('swimlane', 'save', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('project_id', $values) ?>
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('project_id', $values) ?>
 
-    <?= Helper\form_label(t('Name'), 'name') ?>
-    <?= Helper\form_text('name', $values, $errors, array('autofocus required')) ?>
+    <?= $this->formLabel(t('Name'), 'name') ?>
+    <?= $this->formText('name', $values, $errors, array('autofocus required')) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
@@ -24,15 +24,15 @@
 <div class="page-header">
     <h2><?= t('Change default swimlane') ?></h2>
 </div>
-<form method="post" action="<?= Helper\u('swimlane', 'change', array('project_id' => $project['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('swimlane', 'change', array('project_id' => $project['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('id', $default_swimlane) ?>
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('id', $default_swimlane) ?>
 
-    <?= Helper\form_label(t('Rename'), 'default_swimlane') ?>
-    <?= Helper\form_text('default_swimlane', $default_swimlane, array(), array('autofocus required')) ?><br/>
+    <?= $this->formLabel(t('Rename'), 'default_swimlane') ?>
+    <?= $this->formText('default_swimlane', $default_swimlane, array(), array('autofocus required')) ?><br/>
 
-    <?= Helper\form_checkbox('show_default_swimlane', t('Show default swimlane'), 1, isset($default_swimlane['show_default_swimlane']) && $default_swimlane['show_default_swimlane'] == 1) ?>
+    <?= $this->formCheckbox('show_default_swimlane', t('Show default swimlane'), 1, isset($default_swimlane['show_default_swimlane']) && $default_swimlane['show_default_swimlane'] == 1) ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
@@ -43,5 +43,5 @@
 <div class="page-header">
     <h2><?= t('Inactive swimlanes') ?></h2>
 </div>
-<?= Helper\template('swimlane/table', array('swimlanes' => $inactive_swimlanes, 'project' => $project, 'hide_position' => true)) ?>
+<?= $this->render('swimlane/table', array('swimlanes' => $inactive_swimlanes, 'project' => $project, 'hide_position' => true)) ?>
 <?php endif ?>
\ No newline at end of file
diff --git a/app/Template/swimlane/remove.php b/app/Template/swimlane/remove.php
index edf8803c..3268f51f 100644
--- a/app/Template/swimlane/remove.php
+++ b/app/Template/swimlane/remove.php
@@ -9,9 +9,9 @@
         </p>
 
         <div class="form-actions">
-            <?= Helper\a(t('Yes'), 'swimlane', 'remove', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true, 'btn btn-red') ?>
+            <?= $this->a(t('Yes'), 'swimlane', 'remove', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true, 'btn btn-red') ?>
             <?= t('or') ?>
-            <?= Helper\a(t('cancel'), 'swimlane', 'index', array('project_id' => $project['id'])) ?>
+            <?= $this->a(t('cancel'), 'swimlane', 'index', array('project_id' => $project['id'])) ?>
         </div>
     </div>
 </section>
\ No newline at end of file
diff --git a/app/Template/swimlane/table.php b/app/Template/swimlane/table.php
index ac7ed835..32870ecc 100644
--- a/app/Template/swimlane/table.php
+++ b/app/Template/swimlane/table.php
@@ -11,31 +11,31 @@
         <?php if (! isset($hide_position)): ?>
             <td>#<?= $swimlane['position'] ?></td>
         <?php endif ?>
-        <td><?= Helper\escape($swimlane['name']) ?></td>
+        <td><?= $this->e($swimlane['name']) ?></td>
         <td>
             <ul>
                 <?php if ($swimlane['position'] != 0 && $swimlane['position'] != 1): ?>
                     <li>
-                        <?= Helper\a(t('Move Up'), 'swimlane', 'moveup', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
+                        <?= $this->a(t('Move Up'), 'swimlane', 'moveup', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
                     </li>
                 <?php endif ?>
                 <?php if ($swimlane['position'] != 0 && $swimlane['position'] != count($swimlanes)): ?>
                     <li>
-                        <?= Helper\a(t('Move Down'), 'swimlane', 'movedown', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
+                        <?= $this->a(t('Move Down'), 'swimlane', 'movedown', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
                     </li>
                 <?php endif ?>
                 <li>
-                    <?= Helper\a(t('Rename'), 'swimlane', 'edit', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id'])) ?>
+                    <?= $this->a(t('Rename'), 'swimlane', 'edit', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id'])) ?>
                 </li>
                 <li>
                     <?php if ($swimlane['is_active']): ?>
-                        <?= Helper\a(t('Disable'), 'swimlane', 'disable', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
+                        <?= $this->a(t('Disable'), 'swimlane', 'disable', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
                     <?php else: ?>
-                        <?= Helper\a(t('Enable'), 'swimlane', 'enable', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
+                        <?= $this->a(t('Enable'), 'swimlane', 'enable', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id']), true) ?>
                     <?php endif ?>
                 </li>
                 <li>
-                    <?= Helper\a(t('Remove'), 'swimlane', 'confirm', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id'])) ?>
+                    <?= $this->a(t('Remove'), 'swimlane', 'confirm', array('project_id' => $project['id'], 'swimlane_id' => $swimlane['id'])) ?>
                 </li>
             </ul>
         </td>
diff --git a/app/Template/task/close.php b/app/Template/task/close.php
index 062d0a88..76852862 100644
--- a/app/Template/task/close.php
+++ b/app/Template/task/close.php
@@ -4,12 +4,12 @@
 
 <div class="confirm">
     <p class="alert alert-info">
-        <?= t('Do you really want to close this task: "%s"?', Helper\escape($task['title'])) ?>
+        <?= t('Do you really want to close this task: "%s"?', $this->e($task['title'])) ?>
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'task', 'close', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'task', 'close', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/task/comments.php b/app/Template/task/comments.php
index 343e66c5..6f380567 100644
--- a/app/Template/task/comments.php
+++ b/app/Template/task/comments.php
@@ -5,7 +5,7 @@
     </div>
 
     <?php foreach ($comments as $comment): ?>
-        <?= Helper\template('comment/show', array(
+        <?= $this->render('comment/show', array(
             'comment' => $comment,
             'task' => $task,
             'project' => $project,
@@ -15,10 +15,10 @@
     <?php endforeach ?>
 
     <?php if (! isset($not_editable)): ?>
-        <?= Helper\template('comment/create', array(
+        <?= $this->render('comment/create', array(
                 'skip_cancel' => true,
                 'values' => array(
-                    'user_id' => Helper\get_user_id(),
+                    'user_id' => $this->acl->getUserId(),
                     'task_id' => $task['id'],
                 ),
                 'errors' => array(),
diff --git a/app/Template/task/details.php b/app/Template/task/details.php
index b5111f78..50145da4 100644
--- a/app/Template/task/details.php
+++ b/app/Template/task/details.php
@@ -1,7 +1,7 @@
 <div class="task-<?= $task['color_id'] ?> task-show-details">
-    <h2><?= Helper\escape('#'.$task['id'].' '.$task['title']) ?></h2>
+    <h2><?= $this->e('#'.$task['id'].' '.$task['title']) ?></h2>
     <?php if ($task['score']): ?>
-        <span class="task-score"><?= Helper\escape($task['score']) ?></span>
+        <span class="task-score"><?= $this->e($task['score']) ?></span>
     <?php endif ?>
     <ul>
         <?php if ($task['reference']): ?>
@@ -58,13 +58,13 @@
         </li>
         <li>
             <?= t('Column on the board:') ?>
-            <strong><?= Helper\escape($task['column_title']) ?></strong>
-            (<?= Helper\escape($task['project_name']) ?>)
+            <strong><?= $this->e($task['column_title']) ?></strong>
+            (<?= $this->e($task['project_name']) ?>)
         </li>
-        <li><?= t('Task position:').' '.Helper\escape($task['position']) ?></li>
+        <li><?= t('Task position:').' '.$this->e($task['position']) ?></li>
         <?php if ($task['category_name']): ?>
         <li>
-            <?= t('Category:') ?> <strong><?= Helper\escape($task['category_name']) ?></strong>
+            <?= t('Category:') ?> <strong><?= $this->e($task['category_name']) ?></strong>
         </li>
         <?php endif ?>
         <li>
@@ -76,7 +76,7 @@
         </li>
         <?php if ($project['is_public']): ?>
         <li>
-            <?= Helper\a(t('Public link'), 'task', 'readonly', array('task_id' => $task['id'], 'token' => $project['token']), false, '', '', true) ?>
+            <?= $this->a(t('Public link'), 'task', 'readonly', array('task_id' => $task['id'], 'token' => $project['token']), false, '', '', true) ?>
         </li>
         <?php endif ?>
     </ul>
diff --git a/app/Template/task/duplicate.php b/app/Template/task/duplicate.php
index 3d1829ed..c1aed6be 100644
--- a/app/Template/task/duplicate.php
+++ b/app/Template/task/duplicate.php
@@ -8,8 +8,8 @@
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'task', 'duplicate', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'task', 'duplicate', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/task/duplicate_project.php b/app/Template/task/duplicate_project.php
index 45081842..d69da9d5 100644
--- a/app/Template/task/duplicate_project.php
+++ b/app/Template/task/duplicate_project.php
@@ -6,18 +6,18 @@
     <p class="alert"><?= t('No project') ?></p>
 <?php else: ?>
 
-    <form method="post" action="<?= Helper\u('task', 'copy', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>" autocomplete="off">
+    <form method="post" action="<?= $this->u('task', 'copy', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>" autocomplete="off">
 
-        <?= Helper\form_csrf() ?>
+        <?= $this->formCsrf() ?>
 
-        <?= Helper\form_hidden('id', $values) ?>
-        <?= Helper\form_label(t('Project'), 'project_id') ?>
-        <?= Helper\form_select('project_id', $projects_list, $values, $errors) ?><br/>
+        <?= $this->formHidden('id', $values) ?>
+        <?= $this->formLabel(t('Project'), 'project_id') ?>
+        <?= $this->formSelect('project_id', $projects_list, $values, $errors) ?><br/>
 
         <div class="form-actions">
             <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
             <?= t('or') ?>
-            <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
         </div>
     </form>
 
diff --git a/app/Template/task/edit.php b/app/Template/task/edit.php
index 6f136cb9..ef1a9dfa 100644
--- a/app/Template/task/edit.php
+++ b/app/Template/task/edit.php
@@ -2,16 +2,16 @@
     <h2><?= t('Edit a task') ?></h2>
 </div>
 <section id="task-section">
-<form method="post" action="<?= Helper\u('task', 'update', array('task_id' => $task['id'], 'ajax' => $ajax)) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('task', 'update', array('task_id' => $task['id'], 'ajax' => $ajax)) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
     <div class="form-column">
 
-        <?= Helper\form_label(t('Title'), 'title') ?>
-        <?= Helper\form_text('title', $values, $errors, array('required')) ?><br/>
+        <?= $this->formLabel(t('Title'), 'title') ?>
+        <?= $this->formText('title', $values, $errors, array('required')) ?><br/>
 
-        <?= Helper\form_label(t('Description'), 'description') ?>
+        <?= $this->formLabel(t('Description'), 'description') ?>
 
         <div class="form-tabs">
             <ul class="form-tabs-nav">
@@ -23,7 +23,7 @@
                 </li>
             </ul>
             <div class="write-area">
-                <?= Helper\form_textarea('description', $values, $errors, array('placeholder="'.t('Leave a description').'"')) ?>
+                <?= $this->formTextarea('description', $values, $errors, array('placeholder="'.t('Leave a description').'"')) ?>
             </div>
             <div class="preview-area">
                 <div class="markdown"></div>
@@ -35,23 +35,23 @@
     </div>
 
     <div class="form-column">
-        <?= Helper\form_hidden('id', $values) ?>
-        <?= Helper\form_hidden('project_id', $values) ?>
+        <?= $this->formHidden('id', $values) ?>
+        <?= $this->formHidden('project_id', $values) ?>
 
-        <?= Helper\form_label(t('Assignee'), 'owner_id') ?>
-        <?= Helper\form_select('owner_id', $users_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Assignee'), 'owner_id') ?>
+        <?= $this->formSelect('owner_id', $users_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Category'), 'category_id') ?>
-        <?= Helper\form_select('category_id', $categories_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Category'), 'category_id') ?>
+        <?= $this->formSelect('category_id', $categories_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Color'), 'color_id') ?>
-        <?= Helper\form_select('color_id', $colors_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Color'), 'color_id') ?>
+        <?= $this->formSelect('color_id', $colors_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Complexity'), 'score') ?>
-        <?= Helper\form_number('score', $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Complexity'), 'score') ?>
+        <?= $this->formNumber('score', $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Due Date'), 'date_due') ?>
-        <?= Helper\form_text('date_due', $values, $errors, array('placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?><br/>
+        <?= $this->formLabel(t('Due Date'), 'date_due') ?>
+        <?= $this->formText('date_due', $values, $errors, array('placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?><br/>
         <div class="form-help"><?= t('Others formats accepted: %s and %s', date('Y-m-d'), date('Y_m_d')) ?></div>
     </div>
 
@@ -59,9 +59,9 @@
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
         <?php if ($ajax): ?>
-            <?= Helper\a(t('cancel'), 'board', 'show', array('project_id' => $task['project_id'])) ?>
+            <?= $this->a(t('cancel'), 'board', 'show', array('project_id' => $task['project_id'])) ?>
         <?php else: ?>
-            <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
         <?php endif ?>
     </div>
 </form>
diff --git a/app/Template/task/edit_description.php b/app/Template/task/edit_description.php
index 9ec94d69..d53aff93 100644
--- a/app/Template/task/edit_description.php
+++ b/app/Template/task/edit_description.php
@@ -2,10 +2,10 @@
     <h2><?= t('Edit the description') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('task', 'description', array('task_id' => $task['id'], 'ajax' => $ajax)) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('task', 'description', array('task_id' => $task['id'], 'ajax' => $ajax)) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('id', $values) ?>
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('id', $values) ?>
 
     <div class="form-tabs">
         <ul class="form-tabs-nav">
@@ -17,7 +17,7 @@
             </li>
         </ul>
         <div class="write-area">
-            <?= Helper\form_textarea('description', $values, $errors, array('autofocus', 'placeholder="'.t('Leave a description').'"'), 'description-textarea') ?>
+            <?= $this->formTextarea('description', $values, $errors, array('autofocus', 'placeholder="'.t('Leave a description').'"'), 'description-textarea') ?>
         </div>
         <div class="preview-area">
             <div class="markdown"></div>
@@ -30,9 +30,9 @@
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
         <?php if ($ajax): ?>
-            <?= Helper\a(t('cancel'), 'board', 'show', array('project_id' => $task['project_id'])) ?>
+            <?= $this->a(t('cancel'), 'board', 'show', array('project_id' => $task['project_id'])) ?>
         <?php else: ?>
-            <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
         <?php endif ?>
     </div>
 </form>
diff --git a/app/Template/task/layout.php b/app/Template/task/layout.php
index a73ce28f..776fdc78 100644
--- a/app/Template/task/layout.php
+++ b/app/Template/task/layout.php
@@ -1,12 +1,12 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $task['project_id'])) ?></li>
+            <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $task['project_id'])) ?></li>
         </ul>
     </div>
     <section class="sidebar-container" id="task-section">
 
-        <?= Helper\template('task/sidebar', array('task' => $task, 'hide_remove_menu' => isset($hide_remove_menu))) ?>
+        <?= $this->render('task/sidebar', array('task' => $task, 'hide_remove_menu' => isset($hide_remove_menu))) ?>
 
         <div class="sidebar-content">
             <?= $task_content_for_layout ?>
diff --git a/app/Template/task/move_project.php b/app/Template/task/move_project.php
index 1a355b02..15b295d7 100644
--- a/app/Template/task/move_project.php
+++ b/app/Template/task/move_project.php
@@ -6,18 +6,18 @@
     <p class="alert"><?= t('No project') ?></p>
 <?php else: ?>
 
-    <form method="post" action="<?= Helper\u('task', 'move', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>" autocomplete="off">
+    <form method="post" action="<?= $this->u('task', 'move', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>" autocomplete="off">
 
-        <?= Helper\form_csrf() ?>
+        <?= $this->formCsrf() ?>
 
-        <?= Helper\form_hidden('id', $values) ?>
-        <?= Helper\form_label(t('Project'), 'project_id') ?>
-        <?= Helper\form_select('project_id', $projects_list, $values, $errors) ?><br/>
+        <?= $this->formHidden('id', $values) ?>
+        <?= $this->formLabel(t('Project'), 'project_id') ?>
+        <?= $this->formSelect('project_id', $projects_list, $values, $errors) ?><br/>
 
         <div class="form-actions">
             <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
             <?= t('or') ?>
-            <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
         </div>
     </form>
 
diff --git a/app/Template/task/new.php b/app/Template/task/new.php
index 3e2576c5..6294968a 100644
--- a/app/Template/task/new.php
+++ b/app/Template/task/new.php
@@ -1,7 +1,7 @@
 <?php if (! $ajax): ?>
 <div class="page-header">
     <ul>
-        <li><i class="fa fa-table fa-fw"></i><?= Helper\a(t('Back to the board'), 'board', 'show', array('project_id' => $values['project_id'])) ?></li>
+        <li><i class="fa fa-table fa-fw"></i><?= $this->a(t('Back to the board'), 'board', 'show', array('project_id' => $values['project_id'])) ?></li>
     </ul>
 </div>
 <?php else: ?>
@@ -11,15 +11,15 @@
 <?php endif ?>
 
 <section id="task-section">
-<form method="post" action="<?= Helper\u('task', 'save', array('project_id' => $values['project_id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('task', 'save', array('project_id' => $values['project_id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
     <div class="form-column">
-        <?= Helper\form_label(t('Title'), 'title') ?>
-        <?= Helper\form_text('title', $values, $errors, array('autofocus', 'required'), 'form-input-large') ?><br/>
+        <?= $this->formLabel(t('Title'), 'title') ?>
+        <?= $this->formText('title', $values, $errors, array('autofocus', 'required'), 'form-input-large') ?><br/>
 
-        <?= Helper\form_label(t('Description'), 'description') ?>
+        <?= $this->formLabel(t('Description'), 'description') ?>
 
         <div class="form-tabs">
             <ul class="form-tabs-nav">
@@ -31,7 +31,7 @@
                 </li>
             </ul>
             <div class="write-area">
-                <?= Helper\form_textarea('description', $values, $errors, array('placeholder="'.t('Leave a description').'"')) ?>
+                <?= $this->formTextarea('description', $values, $errors, array('placeholder="'.t('Leave a description').'"')) ?>
             </div>
             <div class="preview-area">
                 <div class="markdown"></div>
@@ -41,40 +41,40 @@
         <div class="form-help"><a href="http://kanboard.net/documentation/syntax-guide" target="_blank" rel="noreferrer"><?= t('Write your text in Markdown') ?></a></div>
 
         <?php if (! isset($duplicate)): ?>
-            <?= Helper\form_checkbox('another_task', t('Create another task'), 1, isset($values['another_task']) && $values['another_task'] == 1) ?>
+            <?= $this->formCheckbox('another_task', t('Create another task'), 1, isset($values['another_task']) && $values['another_task'] == 1) ?>
         <?php endif ?>
     </div>
 
     <div class="form-column">
-        <?= Helper\form_hidden('project_id', $values) ?>
-        <?= Helper\form_hidden('swimlane_id', $values) ?>
+        <?= $this->formHidden('project_id', $values) ?>
+        <?= $this->formHidden('swimlane_id', $values) ?>
 
-        <?= Helper\form_label(t('Assignee'), 'owner_id') ?>
-        <?= Helper\form_select('owner_id', $users_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Assignee'), 'owner_id') ?>
+        <?= $this->formSelect('owner_id', $users_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Category'), 'category_id') ?>
-        <?= Helper\form_select('category_id', $categories_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Category'), 'category_id') ?>
+        <?= $this->formSelect('category_id', $categories_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Column'), 'column_id') ?>
-        <?= Helper\form_select('column_id', $columns_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Column'), 'column_id') ?>
+        <?= $this->formSelect('column_id', $columns_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Color'), 'color_id') ?>
-        <?= Helper\form_select('color_id', $colors_list, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Color'), 'color_id') ?>
+        <?= $this->formSelect('color_id', $colors_list, $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Complexity'), 'score') ?>
-        <?= Helper\form_number('score', $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Complexity'), 'score') ?>
+        <?= $this->formNumber('score', $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Original estimate'), 'time_estimated') ?>
-        <?= Helper\form_numeric('time_estimated', $values, $errors) ?> <?= t('hours') ?><br/>
+        <?= $this->formLabel(t('Original estimate'), 'time_estimated') ?>
+        <?= $this->formNumeric('time_estimated', $values, $errors) ?> <?= t('hours') ?><br/>
 
-        <?= Helper\form_label(t('Due Date'), 'date_due') ?>
-        <?= Helper\form_text('date_due', $values, $errors, array('placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?><br/>
+        <?= $this->formLabel(t('Due Date'), 'date_due') ?>
+        <?= $this->formText('date_due', $values, $errors, array('placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?><br/>
         <div class="form-help"><?= t('Others formats accepted: %s and %s', date('Y-m-d'), date('Y_m_d')) ?></div>
     </div>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
-        <?= t('or') ?> <?= Helper\a(t('cancel'), 'board', 'show', array('project_id' => $values['project_id'])) ?>
+        <?= t('or') ?> <?= $this->a(t('cancel'), 'board', 'show', array('project_id' => $values['project_id'])) ?>
     </div>
 </form>
 </section>
diff --git a/app/Template/task/open.php b/app/Template/task/open.php
index 5dec3b0e..438acb34 100644
--- a/app/Template/task/open.php
+++ b/app/Template/task/open.php
@@ -4,12 +4,12 @@
 
 <div class="confirm">
     <p class="alert alert-info">
-        <?= t('Do you really want to open this task: "%s"?', Helper\escape($task['title'])) ?>
+        <?= t('Do you really want to open this task: "%s"?', $this->e($task['title'])) ?>
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'task', 'open', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'task', 'open', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/task/public.php b/app/Template/task/public.php
index 371c063a..2d95e6db 100644
--- a/app/Template/task/public.php
+++ b/app/Template/task/public.php
@@ -1,22 +1,22 @@
 <section id="main" class="public-task">
 
-    <?= Helper\template('task/details', array('task' => $task, 'project' => $project)) ?>
+    <?= $this->render('task/details', array('task' => $task, 'project' => $project)) ?>
 
-    <p class="pull-right"><?= Helper\a(t('Back to the board'), 'board', 'readonly', array('token' => $project['token'])) ?></p>
+    <p class="pull-right"><?= $this->a(t('Back to the board'), 'board', 'readonly', array('token' => $project['token'])) ?></p>
 
-    <?= Helper\template('task/show_description', array(
+    <?= $this->render('task/show_description', array(
         'task' => $task,
         'project' => $project,
         'is_public' => true
     )) ?>
 
-    <?= Helper\template('subtask/show', array(
+    <?= $this->render('subtask/show', array(
         'task' => $task,
         'subtasks' => $subtasks,
         'not_editable' => true
     )) ?>
 
-    <?= Helper\template('task/comments', array(
+    <?= $this->render('task/comments', array(
         'task' => $task,
         'comments' => $comments,
         'project' => $project,
diff --git a/app/Template/task/remove.php b/app/Template/task/remove.php
index 5d6095bc..59845c6a 100644
--- a/app/Template/task/remove.php
+++ b/app/Template/task/remove.php
@@ -4,12 +4,12 @@
 
 <div class="confirm">
     <p class="alert alert-info">
-        <?= t('Do you really want to remove this task: "%s"?', Helper\escape($task['title'])) ?>
+        <?= t('Do you really want to remove this task: "%s"?', $this->e($task['title'])) ?>
     </p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'task', 'remove', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'task', 'remove', array('task_id' => $task['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
+        <?= $this->a(t('cancel'), 'task', 'show', array('task_id' => $task['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/task/show.php b/app/Template/task/show.php
index 2652291a..b98af52d 100644
--- a/app/Template/task/show.php
+++ b/app/Template/task/show.php
@@ -1,7 +1,7 @@
-<?= Helper\template('task/details', array('task' => $task, 'project' => $project)) ?>
-<?= Helper\template('task/time', array('values' => $values, 'date_format' => $date_format, 'date_formats' => $date_formats)) ?>
-<?= Helper\template('task/show_description', array('task' => $task)) ?>
-<?= Helper\template('subtask/show', array('task' => $task, 'subtasks' => $subtasks)) ?>
-<?= Helper\template('task/timesheet', array('timesheet' => $timesheet)) ?>
-<?= Helper\template('file/show', array('task' => $task, 'files' => $files)) ?>
-<?= Helper\template('task/comments', array('task' => $task, 'comments' => $comments, 'project' => $project)) ?>
\ No newline at end of file
+<?= $this->render('task/details', array('task' => $task, 'project' => $project)) ?>
+<?= $this->render('task/time', array('values' => $values, 'date_format' => $date_format, 'date_formats' => $date_formats)) ?>
+<?= $this->render('task/show_description', array('task' => $task)) ?>
+<?= $this->render('subtask/show', array('task' => $task, 'subtasks' => $subtasks)) ?>
+<?= $this->render('task/timesheet', array('timesheet' => $timesheet)) ?>
+<?= $this->render('file/show', array('task' => $task, 'files' => $files)) ?>
+<?= $this->render('task/comments', array('task' => $task, 'comments' => $comments, 'project' => $project)) ?>
\ No newline at end of file
diff --git a/app/Template/task/show_description.php b/app/Template/task/show_description.php
index 25312149..9cd278e3 100644
--- a/app/Template/task/show_description.php
+++ b/app/Template/task/show_description.php
@@ -6,9 +6,9 @@
 
         <article class="markdown task-show-description">
             <?php if (! isset($is_public)): ?>
-                <?= Helper\markdown($task['description']) ?>
+                <?= $this->markdown($task['description']) ?>
             <?php else: ?>
-                <?= Helper\markdown(
+                <?= $this->markdown(
                     $task['description'],
                     array(
                         'controller' => 'task',
diff --git a/app/Template/task/sidebar.php b/app/Template/task/sidebar.php
index 25bddeab..1779255a 100644
--- a/app/Template/task/sidebar.php
+++ b/app/Template/task/sidebar.php
@@ -2,42 +2,42 @@
     <h2><?= t('Actions') ?></h2>
     <ul>
         <li>
-            <?= Helper\a(t('Summary'), 'task', 'show', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Summary'), 'task', 'show', array('task_id' => $task['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Edit the task'), 'task', 'edit', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Edit the task'), 'task', 'edit', array('task_id' => $task['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Edit the description'), 'task', 'description', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Edit the description'), 'task', 'description', array('task_id' => $task['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Add a sub-task'), 'subtask', 'create', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Add a sub-task'), 'subtask', 'create', array('task_id' => $task['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Add a comment'), 'comment', 'create', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Add a comment'), 'comment', 'create', array('task_id' => $task['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Attach a document'), 'file', 'create', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Attach a document'), 'file', 'create', array('task_id' => $task['id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Duplicate'), 'task', 'duplicate', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>
+            <?= $this->a(t('Duplicate'), 'task', 'duplicate', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Duplicate to another project'), 'task', 'copy', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>
+            <?= $this->a(t('Duplicate to another project'), 'task', 'copy', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>
         </li>
         <li>
-            <?= Helper\a(t('Move to another project'), 'task', 'move', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>
+            <?= $this->a(t('Move to another project'), 'task', 'move', array('task_id' => $task['id'], 'project_id' => $task['project_id'])) ?>
         </li>
         <li>
             <?php if ($task['is_active'] == 1): ?>
-                <?= Helper\a(t('Close this task'), 'task', 'close', array('task_id' => $task['id'])) ?>
+                <?= $this->a(t('Close this task'), 'task', 'close', array('task_id' => $task['id'])) ?>
             <?php else: ?>
-                <?= Helper\a(t('Open this task'), 'task', 'open', array('task_id' => $task['id'])) ?>
+                <?= $this->a(t('Open this task'), 'task', 'open', array('task_id' => $task['id'])) ?>
             <?php endif ?>
         </li>
         <?php if (! $hide_remove_menu): ?>
         <li>
-            <?= Helper\a(t('Remove'), 'task', 'remove', array('task_id' => $task['id'])) ?>
+            <?= $this->a(t('Remove'), 'task', 'remove', array('task_id' => $task['id'])) ?>
         </li>
         <?php endif ?>
     </ul>
diff --git a/app/Template/task/table.php b/app/Template/task/table.php
index 9f11ea85..dfde4561 100644
--- a/app/Template/task/table.php
+++ b/app/Template/task/table.php
@@ -1,32 +1,32 @@
 <table class="table-fixed table-small">
     <tr>
-        <th class="column-8"><?= Helper\order(t('Id'), 'tasks.id', $pagination) ?></th>
-        <th class="column-8"><?= Helper\order(t('Column'), 'tasks.column_id', $pagination) ?></th>
-        <th class="column-8"><?= Helper\order(t('Category'), 'tasks.category_id', $pagination) ?></th>
-        <th><?= Helper\order(t('Title'), 'tasks.title', $pagination) ?></th>
-        <th class="column-10"><?= Helper\order(t('Assignee'), 'users.username', $pagination) ?></th>
-        <th class="column-10"><?= Helper\order(t('Due date'), 'tasks.date_due', $pagination) ?></th>
-        <th class="column-10"><?= Helper\order(t('Date created'), 'tasks.date_creation', $pagination) ?></th>
-        <th class="column-10"><?= Helper\order(t('Date completed'), 'tasks.date_completed', $pagination) ?></th>
-        <th class="column-5"><?= Helper\order(t('Status'), 'tasks.is_active', $pagination) ?></th>
+        <th class="column-8"><?= $this->order(t('Id'), 'tasks.id', $pagination) ?></th>
+        <th class="column-8"><?= $this->order(t('Column'), 'tasks.column_id', $pagination) ?></th>
+        <th class="column-8"><?= $this->order(t('Category'), 'tasks.category_id', $pagination) ?></th>
+        <th><?= $this->order(t('Title'), 'tasks.title', $pagination) ?></th>
+        <th class="column-10"><?= $this->order(t('Assignee'), 'users.username', $pagination) ?></th>
+        <th class="column-10"><?= $this->order(t('Due date'), 'tasks.date_due', $pagination) ?></th>
+        <th class="column-10"><?= $this->order(t('Date created'), 'tasks.date_creation', $pagination) ?></th>
+        <th class="column-10"><?= $this->order(t('Date completed'), 'tasks.date_completed', $pagination) ?></th>
+        <th class="column-5"><?= $this->order(t('Status'), 'tasks.is_active', $pagination) ?></th>
     </tr>
     <?php foreach ($tasks as $task): ?>
     <tr>
         <td class="task-table task-<?= $task['color_id'] ?>">
-            <?= Helper\a('#'.Helper\escape($task['id']), 'task', 'show', array('task_id' => $task['id']), false, '', t('View this task')) ?>
+            <?= $this->a('#'.$this->e($task['id']), 'task', 'show', array('task_id' => $task['id']), false, '', t('View this task')) ?>
         </td>
         <td>
-            <?= Helper\in_list($task['column_id'], $columns) ?>
+            <?= $this->inList($task['column_id'], $columns) ?>
         </td>
         <td>
-            <?= Helper\in_list($task['category_id'], $categories, '') ?>
+            <?= $this->inList($task['category_id'], $categories, '') ?>
         </td>
         <td>
-            <?= Helper\a(Helper\escape($task['title']), 'task', 'show', array('task_id' => $task['id']), false, '', t('View this task')) ?>
+            <?= $this->a($this->e($task['title']), 'task', 'show', array('task_id' => $task['id']), false, '', t('View this task')) ?>
         </td>
         <td>
             <?php if ($task['assignee_username']): ?>
-                <?= Helper\escape($task['assignee_name'] ?: $task['assignee_username']) ?>
+                <?= $this->e($task['assignee_name'] ?: $task['assignee_username']) ?>
             <?php else: ?>
                 <?= t('Unassigned') ?>
             <?php endif ?>
@@ -53,4 +53,4 @@
     <?php endforeach ?>
 </table>
 
-<?= Helper\paginate($pagination) ?>
+<?= $this->paginate($pagination) ?>
diff --git a/app/Template/task/time.php b/app/Template/task/time.php
index 11a76303..b00cbc14 100644
--- a/app/Template/task/time.php
+++ b/app/Template/task/time.php
@@ -1,15 +1,15 @@
-<form method="post" action="<?= Helper\u('task', 'time', array('task_id' => $values['id'])) ?>" class="form-inline task-time-form" autocomplete="off">
-    <?= Helper\form_csrf() ?>
-    <?= Helper\form_hidden('id', $values) ?>
+<form method="post" action="<?= $this->u('task', 'time', array('task_id' => $values['id'])) ?>" class="form-inline task-time-form" autocomplete="off">
+    <?= $this->formCsrf() ?>
+    <?= $this->formHidden('id', $values) ?>
 
-    <?= Helper\form_label(t('Start date'), 'date_started') ?>
-    <?= Helper\form_text('date_started', $values, array(), array('placeholder="'.Helper\in_list($date_format, $date_formats).'"'), 'form-date') ?>
+    <?= $this->formLabel(t('Start date'), 'date_started') ?>
+    <?= $this->formText('date_started', $values, array(), array('placeholder="'.$this->inList($date_format, $date_formats).'"'), 'form-date') ?>
 
-    <?= Helper\form_label(t('Time estimated'), 'time_estimated') ?>
-    <?= Helper\form_numeric('time_estimated', $values, array(), array('placeholder="'.t('hours').'"')) ?>
+    <?= $this->formLabel(t('Time estimated'), 'time_estimated') ?>
+    <?= $this->formNumeric('time_estimated', $values, array(), array('placeholder="'.t('hours').'"')) ?>
 
-    <?= Helper\form_label(t('Time spent'), 'time_spent') ?>
-    <?= Helper\form_numeric('time_spent', $values, array(), array('placeholder="'.t('hours').'"')) ?>
+    <?= $this->formLabel(t('Time spent'), 'time_spent') ?>
+    <?= $this->formNumeric('time_spent', $values, array(), array('placeholder="'.t('hours').'"')) ?>
 
     <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
 </form>
\ No newline at end of file
diff --git a/app/Template/task/timesheet.php b/app/Template/task/timesheet.php
index cd093657..fa76b84d 100644
--- a/app/Template/task/timesheet.php
+++ b/app/Template/task/timesheet.php
@@ -5,9 +5,9 @@
 </div>
 
 <ul class="listing">
-    <li><?= t('Estimate:') ?> <strong><?= Helper\escape($timesheet['time_estimated']) ?></strong> <?= t('hours') ?></li>
-    <li><?= t('Spent:') ?> <strong><?= Helper\escape($timesheet['time_spent']) ?></strong> <?= t('hours') ?></li>
-    <li><?= t('Remaining:') ?> <strong><?= Helper\escape($timesheet['time_remaining']) ?></strong> <?= t('hours') ?></li>
+    <li><?= t('Estimate:') ?> <strong><?= $this->e($timesheet['time_estimated']) ?></strong> <?= t('hours') ?></li>
+    <li><?= t('Spent:') ?> <strong><?= $this->e($timesheet['time_spent']) ?></strong> <?= t('hours') ?></li>
+    <li><?= t('Remaining:') ?> <strong><?= $this->e($timesheet['time_remaining']) ?></strong> <?= t('hours') ?></li>
 </ul>
 
 <?php endif ?>
\ No newline at end of file
diff --git a/app/Template/user/edit.php b/app/Template/user/edit.php
index bc942567..6766f952 100644
--- a/app/Template/user/edit.php
+++ b/app/Template/user/edit.php
@@ -1,32 +1,32 @@
 <div class="page-header">
     <h2><?= t('Edit user') ?></h2>
 </div>
-<form method="post" action="<?= Helper\u('user', 'edit', array('user_id' => $user['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('user', 'edit', array('user_id' => $user['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_hidden('id', $values) ?>
-    <?= Helper\form_hidden('is_ldap_user', $values) ?>
+    <?= $this->formHidden('id', $values) ?>
+    <?= $this->formHidden('is_ldap_user', $values) ?>
 
-    <?= Helper\form_label(t('Username'), 'username') ?>
-    <?= Helper\form_text('username', $values, $errors, array('required', $values['is_ldap_user'] == 1 ? 'readonly' : '')) ?><br/>
+    <?= $this->formLabel(t('Username'), 'username') ?>
+    <?= $this->formText('username', $values, $errors, array('required', $values['is_ldap_user'] == 1 ? 'readonly' : '')) ?><br/>
 
-    <?= Helper\form_label(t('Name'), 'name') ?>
-    <?= Helper\form_text('name', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Name'), 'name') ?>
+    <?= $this->formText('name', $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Email'), 'email') ?>
-    <?= Helper\form_email('email', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Email'), 'email') ?>
+    <?= $this->formEmail('email', $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Default project'), 'default_project_id') ?>
-    <?= Helper\form_select('default_project_id', $projects, $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Default project'), 'default_project_id') ?>
+    <?= $this->formSelect('default_project_id', $projects, $values, $errors) ?><br/>
 
-    <?php if (Helper\is_admin()): ?>
-        <?= Helper\form_checkbox('is_admin', t('Administrator'), 1, isset($values['is_admin']) && $values['is_admin'] == 1 ? true : false) ?><br/>
+    <?php if ($this->acl->isAdminUser()): ?>
+        <?= $this->formCheckbox('is_admin', t('Administrator'), 1, isset($values['is_admin']) && $values['is_admin'] == 1 ? true : false) ?><br/>
     <?php endif ?>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
+        <?= $this->a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
     </div>
 </form>
\ No newline at end of file
diff --git a/app/Template/user/external.php b/app/Template/user/external.php
index 31ffcb75..6ee1e459 100644
--- a/app/Template/user/external.php
+++ b/app/Template/user/external.php
@@ -6,11 +6,11 @@
     <h3><i class="fa fa-google"></i> <?= t('Google Account') ?></h3>
 
     <p class="listing">
-    <?php if (Helper\is_current_user($user['id'])): ?>
+    <?php if ($this->acl->isCurrentUser($user['id'])): ?>
         <?php if (empty($user['google_id'])): ?>
-            <?= Helper\a(t('Link my Google Account'), 'user', 'google', array(), true) ?>
+            <?= $this->a(t('Link my Google Account'), 'user', 'google', array(), true) ?>
         <?php else: ?>
-            <?= Helper\a(t('Unlink my Google Account'), 'user', 'unlinkGoogle', array(), true) ?>
+            <?= $this->a(t('Unlink my Google Account'), 'user', 'unlinkGoogle', array(), true) ?>
         <?php endif ?>
     <?php else: ?>
         <?= empty($user['google_id']) ? t('No account linked.') : t('Account linked.') ?>
@@ -22,11 +22,11 @@
     <h3><i class="fa fa-github"></i> <?= t('Github Account') ?></h3>
 
     <p class="listing">
-    <?php if (Helper\is_current_user($user['id'])): ?>
+    <?php if ($this->acl->isCurrentUser($user['id'])): ?>
         <?php if (empty($user['github_id'])): ?>
-            <?= Helper\a(t('Link my GitHub Account'), 'user', 'github', array(), true) ?>
+            <?= $this->a(t('Link my GitHub Account'), 'user', 'github', array(), true) ?>
         <?php else: ?>
-            <?= Helper\a(t('Unlink my GitHub Account'), 'user', 'unlinkGitHub', array(), true) ?>
+            <?= $this->a(t('Unlink my GitHub Account'), 'user', 'unlinkGitHub', array(), true) ?>
         <?php endif ?>
     <?php else: ?>
         <?= empty($user['github_id']) ? t('No account linked.') : t('Account linked.') ?>
diff --git a/app/Template/user/index.php b/app/Template/user/index.php
index 73612b0b..a6da9f65 100644
--- a/app/Template/user/index.php
+++ b/app/Template/user/index.php
@@ -1,8 +1,8 @@
 <section id="main">
     <div class="page-header">
-        <?php if (Helper\is_admin()): ?>
+        <?php if ($this->acl->isAdminUser()): ?>
         <ul>
-            <li><i class="fa fa-plus fa-fw"></i><?= Helper\a(t('New user'), 'user', 'create') ?></li>
+            <li><i class="fa fa-plus fa-fw"></i><?= $this->a(t('New user'), 'user', 'create') ?></li>
         </ul>
         <?php endif ?>
     </div>
@@ -12,35 +12,35 @@
     <?php else: ?>
         <table>
             <tr>
-                <th><?= Helper\order(t('Id'), 'id', $pagination) ?></th>
-                <th><?= Helper\order(t('Username'), 'username', $pagination) ?></th>
-                <th><?= Helper\order(t('Name'), 'name', $pagination) ?></th>
-                <th><?= Helper\order(t('Email'), 'email', $pagination) ?></th>
-                <th><?= Helper\order(t('Administrator'), 'is_admin', $pagination) ?></th>
-                <th><?= Helper\order(t('Default project'), 'default_project_id', $pagination) ?></th>
-                <th><?= Helper\order(t('Notifications'), 'notifications_enabled', $pagination) ?></th>
+                <th><?= $this->order(t('Id'), 'id', $pagination) ?></th>
+                <th><?= $this->order(t('Username'), 'username', $pagination) ?></th>
+                <th><?= $this->order(t('Name'), 'name', $pagination) ?></th>
+                <th><?= $this->order(t('Email'), 'email', $pagination) ?></th>
+                <th><?= $this->order(t('Administrator'), 'is_admin', $pagination) ?></th>
+                <th><?= $this->order(t('Default project'), 'default_project_id', $pagination) ?></th>
+                <th><?= $this->order(t('Notifications'), 'notifications_enabled', $pagination) ?></th>
                 <th><?= t('External accounts') ?></th>
-                <th><?= Helper\order(t('Account type'), 'is_ldap_user', $pagination) ?></th>
+                <th><?= $this->order(t('Account type'), 'is_ldap_user', $pagination) ?></th>
             </tr>
             <?php foreach ($users as $user): ?>
             <tr>
                 <td>
-                    <?= Helper\a('#'.$user['id'], 'user', 'show', array('user_id' => $user['id'])) ?>
+                    <?= $this->a('#'.$user['id'], 'user', 'show', array('user_id' => $user['id'])) ?>
                 </td>
                 <td>
-                    <?= Helper\a(Helper\escape($user['username']), 'user', 'show', array('user_id' => $user['id'])) ?>
+                    <?= $this->a($this->e($user['username']), 'user', 'show', array('user_id' => $user['id'])) ?>
                 </td>
                 <td>
-                    <?= Helper\escape($user['name']) ?>
+                    <?= $this->e($user['name']) ?>
                 </td>
                 <td>
-                    <a href="mailto:<?= Helper\escape($user['email']) ?>"><?= Helper\escape($user['email']) ?></a>
+                    <a href="mailto:<?= $this->e($user['email']) ?>"><?= $this->e($user['email']) ?></a>
                 </td>
                 <td>
                     <?= $user['is_admin'] ? t('Yes') : t('No') ?>
                 </td>
                 <td>
-                    <?= (isset($user['default_project_id']) && isset($projects[$user['default_project_id']])) ? Helper\escape($projects[$user['default_project_id']]) : t('None'); ?>
+                    <?= (isset($user['default_project_id']) && isset($projects[$user['default_project_id']])) ? $this->e($projects[$user['default_project_id']]) : t('None'); ?>
                 </td>
                 <td>
                     <?php if ($user['notifications_enabled'] == 1): ?>
@@ -66,7 +66,7 @@
             <?php endforeach ?>
         </table>
 
-        <?= Helper\paginate($pagination) ?>
+        <?= $this->paginate($pagination) ?>
     <?php endif ?>
     </section>
 </section>
diff --git a/app/Template/user/last.php b/app/Template/user/last.php
index 0b55b0d5..317334b8 100644
--- a/app/Template/user/last.php
+++ b/app/Template/user/last.php
@@ -15,9 +15,9 @@
     <?php foreach($last_logins as $login): ?>
     <tr>
         <td><?= dt('%B %e, %Y at %k:%M %p', $login['date_creation']) ?></td>
-        <td><?= Helper\escape($login['auth_type']) ?></td>
-        <td><?= Helper\escape($login['ip']) ?></td>
-        <td><?= Helper\escape(Helper\summary($login['user_agent'])) ?></td>
+        <td><?= $this->e($login['auth_type']) ?></td>
+        <td><?= $this->e($login['ip']) ?></td>
+        <td><?= $this->e($this->summary($login['user_agent'])) ?></td>
     </tr>
     <?php endforeach ?>
     </table>
diff --git a/app/Template/user/layout.php b/app/Template/user/layout.php
index 0778b716..94610000 100644
--- a/app/Template/user/layout.php
+++ b/app/Template/user/layout.php
@@ -1,15 +1,15 @@
 <section id="main">
     <div class="page-header">
-        <?php if (Helper\is_admin()): ?>
+        <?php if ($this->acl->isAdminUser()): ?>
         <ul>
-            <li><i class="fa fa-user fa-fw"></i><?= Helper\a(t('All users'), 'user', 'index') ?></li>
-            <li><i class="fa fa-plus fa-fw"></i><?= Helper\a(t('New user'), 'user', 'create') ?></li>
+            <li><i class="fa fa-user fa-fw"></i><?= $this->a(t('All users'), 'user', 'index') ?></li>
+            <li><i class="fa fa-plus fa-fw"></i><?= $this->a(t('New user'), 'user', 'create') ?></li>
         </ul>
         <?php endif ?>
     </div>
     <section class="sidebar-container" id="user-section">
 
-        <?= Helper\template('user/sidebar', array('user' => $user)) ?>
+        <?= $this->render('user/sidebar', array('user' => $user)) ?>
 
         <div class="sidebar-content">
             <?= $user_content_for_layout ?>
diff --git a/app/Template/user/login.php b/app/Template/user/login.php
index fea44a01..c2e3914e 100644
--- a/app/Template/user/login.php
+++ b/app/Template/user/login.php
@@ -1,27 +1,27 @@
 <div class="form-login">
 
     <?php if (isset($errors['login'])): ?>
-        <p class="alert alert-error"><?= Helper\escape($errors['login']) ?></p>
+        <p class="alert alert-error"><?= $this->e($errors['login']) ?></p>
     <?php endif ?>
 
-    <form method="post" action="<?= Helper\u('user', 'check', array('redirect_query' => urlencode($redirect_query))) ?>">
+    <form method="post" action="<?= $this->u('user', 'check', array('redirect_query' => urlencode($redirect_query))) ?>">
 
-        <?= Helper\form_csrf() ?>
+        <?= $this->formCsrf() ?>
 
-        <?= Helper\form_label(t('Username'), 'username') ?>
-        <?= Helper\form_text('username', $values, $errors, array('autofocus', 'required')) ?><br/>
+        <?= $this->formLabel(t('Username'), 'username') ?>
+        <?= $this->formText('username', $values, $errors, array('autofocus', 'required')) ?><br/>
 
-        <?= Helper\form_label(t('Password'), 'password') ?>
-        <?= Helper\form_password('password', $values, $errors, array('required')) ?>
+        <?= $this->formLabel(t('Password'), 'password') ?>
+        <?= $this->formPassword('password', $values, $errors, array('required')) ?>
 
-        <?= Helper\form_checkbox('remember_me', t('Remember Me'), 1) ?><br/>
+        <?= $this->formCheckbox('remember_me', t('Remember Me'), 1) ?><br/>
 
         <?php if (GOOGLE_AUTH): ?>
-            <?= Helper\a(t('Login with my Google Account'), 'user', 'google') ?>
+            <?= $this->a(t('Login with my Google Account'), 'user', 'google') ?>
         <?php endif ?>
 
         <?php if (GITHUB_AUTH): ?>
-            <?= Helper\a(t('Login with my GitHub Account'), 'user', 'gitHub') ?>
+            <?= $this->a(t('Login with my GitHub Account'), 'user', 'gitHub') ?>
         <?php endif ?>
 
         <div class="form-actions">
diff --git a/app/Template/user/new.php b/app/Template/user/new.php
index af5824e0..a720d1a1 100644
--- a/app/Template/user/new.php
+++ b/app/Template/user/new.php
@@ -1,38 +1,38 @@
 <section id="main">
     <div class="page-header">
         <ul>
-            <li><i class="fa fa-user fa-fw"></i><?= Helper\a(t('All users'), 'user', 'index') ?></li>
+            <li><i class="fa fa-user fa-fw"></i><?= $this->a(t('All users'), 'user', 'index') ?></li>
         </ul>
     </div>
     <section>
-    <form method="post" action="<?= Helper\u('user', 'save') ?>" autocomplete="off">
+    <form method="post" action="<?= $this->u('user', 'save') ?>" autocomplete="off">
 
-        <?= Helper\form_csrf() ?>
+        <?= $this->formCsrf() ?>
 
-        <?= Helper\form_label(t('Username'), 'username') ?>
-        <?= Helper\form_text('username', $values, $errors, array('autofocus', 'required')) ?><br/>
+        <?= $this->formLabel(t('Username'), 'username') ?>
+        <?= $this->formText('username', $values, $errors, array('autofocus', 'required')) ?><br/>
 
-        <?= Helper\form_label(t('Name'), 'name') ?>
-        <?= Helper\form_text('name', $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Name'), 'name') ?>
+        <?= $this->formText('name', $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Email'), 'email') ?>
-        <?= Helper\form_email('email', $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Email'), 'email') ?>
+        <?= $this->formEmail('email', $values, $errors) ?><br/>
 
-        <?= Helper\form_label(t('Password'), 'password') ?>
-        <?= Helper\form_password('password', $values, $errors, array('required')) ?><br/>
+        <?= $this->formLabel(t('Password'), 'password') ?>
+        <?= $this->formPassword('password', $values, $errors, array('required')) ?><br/>
 
-        <?= Helper\form_label(t('Confirmation'), 'confirmation') ?>
-        <?= Helper\form_password('confirmation', $values, $errors, array('required')) ?><br/>
+        <?= $this->formLabel(t('Confirmation'), 'confirmation') ?>
+        <?= $this->formPassword('confirmation', $values, $errors, array('required')) ?><br/>
 
-        <?= Helper\form_label(t('Default project'), 'default_project_id') ?>
-        <?= Helper\form_select('default_project_id', $projects, $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Default project'), 'default_project_id') ?>
+        <?= $this->formSelect('default_project_id', $projects, $values, $errors) ?><br/>
 
-        <?= Helper\form_checkbox('is_admin', t('Administrator'), 1, isset($values['is_admin']) && $values['is_admin'] == 1 ? true : false) ?>
+        <?= $this->formCheckbox('is_admin', t('Administrator'), 1, isset($values['is_admin']) && $values['is_admin'] == 1 ? true : false) ?>
 
         <div class="form-actions">
             <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
             <?= t('or') ?>
-            <?= Helper\a(t('cancel'), 'user', 'index') ?>
+            <?= $this->a(t('cancel'), 'user', 'index') ?>
         </div>
     </form>
     </section>
diff --git a/app/Template/user/notifications.php b/app/Template/user/notifications.php
index 33da61fb..56c48f8f 100644
--- a/app/Template/user/notifications.php
+++ b/app/Template/user/notifications.php
@@ -2,18 +2,18 @@
     <h2><?= t('Email notifications') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('user', 'notifications', array('user_id' => $user['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('user', 'notifications', array('user_id' => $user['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_csrf() ?>
+    <?= $this->formCsrf() ?>
 
-    <?= Helper\form_checkbox('notifications_enabled', t('Enable email notifications'), '1', $notifications['notifications_enabled'] == 1) ?><br/>
+    <?= $this->formCheckbox('notifications_enabled', t('Enable email notifications'), '1', $notifications['notifications_enabled'] == 1) ?><br/>
 
     <?php if (! empty($projects)): ?>
         <p><?= t('I want to receive notifications only for those projects:') ?><br/><br/></p>
 
         <div class="form-checkbox-group">
         <?php foreach ($projects as $project_id => $project_name): ?>
-            <?= Helper\form_checkbox('projects['.$project_id.']', $project_name, '1', isset($notifications['project_'.$project_id])) ?><br/>
+            <?= $this->formCheckbox('projects['.$project_id.']', $project_name, '1', isset($notifications['project_'.$project_id])) ?><br/>
         <?php endforeach ?>
         </div>
     <?php endif ?>
@@ -21,6 +21,6 @@
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
+        <?= $this->a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
     </div>
 </form>
\ No newline at end of file
diff --git a/app/Template/user/password.php b/app/Template/user/password.php
index 76e0ab15..14de0d42 100644
--- a/app/Template/user/password.php
+++ b/app/Template/user/password.php
@@ -2,25 +2,25 @@
     <h2><?= t('Password modification') ?></h2>
 </div>
 
-<form method="post" action="<?= Helper\u('user', 'password', array('user_id' => $user['id'])) ?>" autocomplete="off">
+<form method="post" action="<?= $this->u('user', 'password', array('user_id' => $user['id'])) ?>" autocomplete="off">
 
-    <?= Helper\form_hidden('id', $values) ?>
-    <?= Helper\form_csrf() ?>
+    <?= $this->formHidden('id', $values) ?>
+    <?= $this->formCsrf() ?>
 
     <div class="alert alert-error">
-        <?= Helper\form_label(t('Current password for the user "%s"', Helper\get_username()), 'current_password') ?>
-        <?= Helper\form_password('current_password', $values, $errors) ?><br/>
+        <?= $this->formLabel(t('Current password for the user "%s"', $this->getFullname()), 'current_password') ?>
+        <?= $this->formPassword('current_password', $values, $errors) ?><br/>
     </div>
 
-    <?= Helper\form_label(t('New password for the user "%s"', Helper\get_username($user)), 'password') ?>
-    <?= Helper\form_password('password', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('New password for the user "%s"', $this->getFullname($user)), 'password') ?>
+    <?= $this->formPassword('password', $values, $errors) ?><br/>
 
-    <?= Helper\form_label(t('Confirmation'), 'confirmation') ?>
-    <?= Helper\form_password('confirmation', $values, $errors) ?><br/>
+    <?= $this->formLabel(t('Confirmation'), 'confirmation') ?>
+    <?= $this->formPassword('confirmation', $values, $errors) ?><br/>
 
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
+        <?= $this->a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
     </div>
 </form>
diff --git a/app/Template/user/remove.php b/app/Template/user/remove.php
index 5f58b631..e4b09cfa 100644
--- a/app/Template/user/remove.php
+++ b/app/Template/user/remove.php
@@ -6,8 +6,8 @@
     <p class="alert alert-info"><?= t('Do you really want to remove this user: "%s"?', $user['name'] ?: $user['username']) ?></p>
 
     <div class="form-actions">
-        <?= Helper\a(t('Yes'), 'user', 'remove', array('user_id' => $user['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
+        <?= $this->a(t('Yes'), 'user', 'remove', array('user_id' => $user['id'], 'confirmation' => 'yes'), true, 'btn btn-red') ?>
         <?= t('or') ?>
-        <?= Helper\a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
+        <?= $this->a(t('cancel'), 'user', 'show', array('user_id' => $user['id'])) ?>
     </div>
 </div>
\ No newline at end of file
diff --git a/app/Template/user/sessions.php b/app/Template/user/sessions.php
index d05d5b6d..5a06057c 100644
--- a/app/Template/user/sessions.php
+++ b/app/Template/user/sessions.php
@@ -17,9 +17,9 @@
     <tr>
         <td><?= dt('%B %e, %Y at %k:%M %p', $session['date_creation']) ?></td>
         <td><?= dt('%B %e, %Y at %k:%M %p', $session['expiration']) ?></td>
-        <td><?= Helper\escape($session['ip']) ?></td>
-        <td><?= Helper\escape(Helper\summary($session['user_agent'])) ?></td>
-        <td><?= Helper\a(t('Remove'), 'user', 'removeSession', array('user_id' => $user['id'], 'id' => $session['id']), true) ?></td>
+        <td><?= $this->e($session['ip']) ?></td>
+        <td><?= $this->e($this->summary($session['user_agent'])) ?></td>
+        <td><?= $this->a(t('Remove'), 'user', 'removeSession', array('user_id' => $user['id'], 'id' => $session['id']), true) ?></td>
     </tr>
     <?php endforeach ?>
     </table>
diff --git a/app/Template/user/show.php b/app/Template/user/show.php
index 1c843751..f65be260 100644
--- a/app/Template/user/show.php
+++ b/app/Template/user/show.php
@@ -2,10 +2,10 @@
     <h2><?= t('Summary') ?></h2>
 </div>
 <ul class="listing">
-    <li><?= t('Username:') ?> <strong><?= Helper\escape($user['username']) ?></strong></li>
-    <li><?= t('Name:') ?> <strong><?= Helper\escape($user['name']) ?></strong></li>
-    <li><?= t('Email:') ?> <strong><?= Helper\escape($user['email']) ?></strong></li>
-    <li><?= t('Default project:') ?> <strong><?= (isset($user['default_project_id']) && isset($projects[$user['default_project_id']])) ? Helper\escape($projects[$user['default_project_id']]) : t('None'); ?></strong></li>
+    <li><?= t('Username:') ?> <strong><?= $this->e($user['username']) ?></strong></li>
+    <li><?= t('Name:') ?> <strong><?= $this->e($user['name']) ?></strong></li>
+    <li><?= t('Email:') ?> <strong><?= $this->e($user['email']) ?></strong></li>
+    <li><?= t('Default project:') ?> <strong><?= (isset($user['default_project_id']) && isset($projects[$user['default_project_id']])) ? $this->e($projects[$user['default_project_id']]) : t('None'); ?></strong></li>
     <li><?= t('Notifications:') ?> <strong><?= $user['notifications_enabled'] == 1 ? t('Enabled') : t('Disabled') ?></strong></li>
     <li><?= t('Group:') ?> <strong><?= $user['is_admin'] ? t('Administrator') : t('Regular user') ?></strong></li>
     <li><?= t('Account type:') ?> <strong><?= $user['is_ldap_user'] ? t('Remote') : t('Local') ?></strong></li>
diff --git a/app/Template/user/sidebar.php b/app/Template/user/sidebar.php
index 0a1a0764..5b7abc34 100644
--- a/app/Template/user/sidebar.php
+++ b/app/Template/user/sidebar.php
@@ -2,37 +2,37 @@
     <h2><?= t('Actions') ?></h2>
     <ul>
         <li>
-            <?= Helper\a(t('Summary'), 'user', 'show', array('user_id' => $user['id'])) ?>
+            <?= $this->a(t('Summary'), 'user', 'show', array('user_id' => $user['id'])) ?>
         </li>
 
-        <?php if (Helper\is_admin() || Helper\is_current_user($user['id'])): ?>
+        <?php if ($this->acl->isAdminUser() || $this->acl->isCurrentUser($user['id'])): ?>
             <li>
-                <?= Helper\a(t('Edit profile'), 'user', 'edit', array('user_id' => $user['id'])) ?>
+                <?= $this->a(t('Edit profile'), 'user', 'edit', array('user_id' => $user['id'])) ?>
             </li>
 
             <?php if ($user['is_ldap_user'] == 0): ?>
                 <li>
-                    <?= Helper\a(t('Change password'), 'user', 'password', array('user_id' => $user['id'])) ?>
+                    <?= $this->a(t('Change password'), 'user', 'password', array('user_id' => $user['id'])) ?>
                 </li>
             <?php endif ?>
 
             <li>
-                <?= Helper\a(t('Email notifications'), 'user', 'notifications', array('user_id' => $user['id'])) ?>
+                <?= $this->a(t('Email notifications'), 'user', 'notifications', array('user_id' => $user['id'])) ?>
             </li>
             <li>
-                <?= Helper\a(t('External accounts'), 'user', 'external', array('user_id' => $user['id'])) ?>
+                <?= $this->a(t('External accounts'), 'user', 'external', array('user_id' => $user['id'])) ?>
             </li>
             <li>
-                <?= Helper\a(t('Last logins'), 'user', 'last', array('user_id' => $user['id'])) ?>
+                <?= $this->a(t('Last logins'), 'user', 'last', array('user_id' => $user['id'])) ?>
             </li>
             <li>
-                <?= Helper\a(t('Persistent connections'), 'user', 'sessions', array('user_id' => $user['id'])) ?>
+                <?= $this->a(t('Persistent connections'), 'user', 'sessions', array('user_id' => $user['id'])) ?>
             </li>
         <?php endif ?>
 
-        <?php if (Helper\is_admin() && ! Helper\is_current_user($user['id'])): ?>
+        <?php if ($this->acl->isAdminUser() && ! $this->acl->isCurrentUser($user['id'])): ?>
             <li>
-                <?= Helper\a(t('Remove'), 'user', 'remove', array('user_id' => $user['id'])) ?>
+                <?= $this->a(t('Remove'), 'user', 'remove', array('user_id' => $user['id'])) ?>
             </li>
         <?php endif ?>
     </ul>