deleteAction in GroupController fired off wrong event

Changed the event fired off by the GroupController upon deletion of a group in deleteAction() from GROUP_CREATE_COMPLETED to GROUP_DELETE_COMPLETED.

Author: rcousens

Controller/GroupController.php

@@ -157,7 +157,7 @@ public function deleteAction(Request $request, $groupName)
 
         /** @var $dispatcher \Symfony\Component\EventDispatcher\EventDispatcherInterface */
         $dispatcher = $this->container->get('event_dispatcher');
-        $dispatcher->dispatch(FOSUserEvents::GROUP_CREATE_COMPLETED, new FilterGroupResponseEvent($group, $request, $response));
+        $dispatcher->dispatch(FOSUserEvents::GROUP_DELETE_COMPLETED, new FilterGroupResponseEvent($group, $request, $response));
 
         return $response;
     }