Display tasks in the calendar + improve settings

app/Template/config/calendar.php

@@ -0,0 +1,33 @@
+<div class="page-header">
+    <h2><?= t('Calendar settings') ?></h2>
+</div>
+<section>
+<form method="post" action="<?= $this->u('config', 'calendar') ?>" autocomplete="off">
+
+    <?= $this->formCsrf() ?>
+
+    <h3><?= t('Project calendar view') ?></h3>
+    <div class="listing">
+        <?= $this->formRadios('calendar_project_tasks', array(
+                'date_creation' => t('Show tasks based on the creation date'),
+                'date_started' => t('Show tasks based on the start date'),
+            ), $values) ?>
+    </div>
+
+    <h3><?= t('User calendar view') ?></h3>
+    <div class="listing">
+        <?= $this->formRadios('calendar_user_tasks', array(
+                'date_creation' => t('Show tasks based on the creation date'),
+                'date_started' => t('Show tasks based on the start date'),
+            ), $values) ?>
+
+        <h4><?= t('Subtasks time tracking') ?></h4>
+        <?= $this->formCheckbox('calendar_user_subtasks_time_tracking', t('Show subtasks based on the time tracking'), 1, $values['calendar_user_subtasks_time_tracking'] == 1) ?>
+        <?= $this->formCheckbox('calendar_user_subtasks_forecast', t('Show subtask estimates (forecast of future work)'), 1, $values['calendar_user_subtasks_forecast'] == 1) ?>
+    </div>
+
+    <div class="form-actions">
+        <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue"/>
+    </div>
+</form>
+</section>