function watchers($id, Request $request, Application $app)
 {
     $this->build($id, $request, $app);
     $uarb = new UserAccountRepositoryBuilder();
     $uarb->setWatchesSite($this->parameters['site']);
     $this->parameters['watchers'] = $uarb->fetchAll();
     return $app['twig']->render('sysadmin/site/watchers.html.twig', $this->parameters);
 }