Set all room settings at once

Summary: Sets notification and sound preferences in a single array()

Test Plan: Change email preference, save, set sound preference, save. Email preference still OK.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D17735

src/applications/conpherence/controller/ConpherenceUpdateController.php

···
           if (!$participant) {
             return id(new Aphront404Response());
           }
-          $participant->setSettings(array('notifications' => $notifications));
-          $participant->setSettings(array('sounds' => $sounds));
+          $participant->setSettings(array(
+            'notifications' => $notifications,
+            'sounds' => $sounds,
+          ));
           $participant->save();
           return id(new AphrontRedirectResponse())
             ->setURI('/'.$conpherence->getMonogram());