Replace calendar component by vanilla javascript

app/Helper/CalendarHelper.php

@@ -16,6 +16,23 @@ use Kanboard\Formatter\TaskCalendarFormatter;
  */
 class CalendarHelper extends Base
 {
+    /**
+     * Render calendar component
+     *
+     * @param  string $checkUrl
+     * @param  string $saveUrl
+     * @return string
+     */
+    public function render($checkUrl, $saveUrl)
+    {
+        $params = array(
+            'checkUrl' => $checkUrl,
+            'saveUrl' => $saveUrl,
+        );
+
+        return '<div class="js-calendar" data-params=\''.json_encode($params, JSON_HEX_APOS).'\'></div>';
+    }
+
     /**
      * Get formatted calendar task due events
      *

app/Template/calendar/show.php

@@ -1,6 +1,9 @@
 <section id="main">
     <?= $this->projectHeader->render($project, 'CalendarController', 'show') ?>
-    <calendar save-url="<?= $this->url->href('CalendarController', 'save', array('project_id' => $project['id'])) ?>"
-              check-url="<?= $this->url->href('CalendarController', 'project', array('project_id' => $project['id'])) ?>">
-    </calendar>
+
+    <?= $this->calendar->render(
+            $this->url->href('CalendarController', 'project', array('project_id' => $project['id'])),
+            $this->url->href('CalendarController', 'save', array('project_id' => $project['id']))
+    ) ?>
+
 </section>

app/Template/dashboard/calendar.php

@@ -1,2 +1,4 @@
-<calendar check-url="<?= $this->url->href('CalendarController', 'user', array('user_id' => $user['id'])) ?>"
-          save-url="<?= $this->url->href('CalendarController', 'save') ?>"></calendar>
+<?= $this->calendar->render(
+        $this->url->href('CalendarController', 'user', array('user_id' => $user['id'])),
+        $this->url->href('CalendarController', 'save')
+) ?>