public function markAllAsRead()
 {
     global $wgUser, $wgCityId;
     $forceAll = $this->request->getVal('forceAll');
     $wn = new WallNotifications();
     $ret = $wn->markRead($wgUser->getId(), $wgCityId);
     if ($ret === false || $forceAll == 'FORCE') {
         $ret = $wn->markReadAllWikis($wgUser->getId());
     }
     $this->getUpdateCountsInternal($wn);
     return true;
 }