function indexWho(Request $request, Application $app)
 {
     $erb = new \com\meetyournextmp\repositories\builders\EventRepositoryBuilder();
     $erb->setIncludeNoHumansOnly(true);
     $erb->setAfterNow();
     $erb->setIncludeDeleted(false);
     $erb->setIncludeCancelled(false);
     $erb->setLimit(50);
     $this->parameters['events'] = $erb->fetchAll();
     return $app['twig']->render('site/help/who.html.twig', $this->parameters);
 }