Various fixes for PHPAnalyzer

app/Subscriber/Base.php

@@ -10,6 +10,8 @@ use Pimple\Container;
  * @package  subscriber
  * @author   Frederic Guillot
  *
+ * @property \Integration\SlackWebhook     $slackWebhook
+ * @property \Integration\Hipchat          $hipchat
  * @property \Model\Board                  $board
  * @property \Model\Config                 $config
  * @property \Model\Comment                $comment

app/Subscriber/NotificationSubscriber.php

@@ -49,7 +49,7 @@ class NotificationSubscriber extends Base implements EventSubscriberInterface
         $values = $this->getTemplateData($event);
         $users = $this->notification->getUsersList($values['task']['project_id']);
 
-        if ($users) {
+        if (! empty($users)) {
             $this->notification->sendEmails($this->templates[$event_name], $users, $values);
         }
     }