Provide link to all rooms when on mobile Conpherence

Summary: There isn't any link back to all your joined rooms when on mobile, add it here.

Test Plan: Pull up mobile, click on menu, see list of threads, click on other room.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D16717

src/applications/conpherence/controller/ConpherenceController.php

@@ -18,6 +18,12 @@ abstract class ConpherenceController extends PhabricatorController {
 
     // Local Links
     if ($conpherence) {
+      $nav->addMenuItem(
+        id(new PHUIListItemView())
+        ->setName(pht('Joined Rooms'))
+        ->setType(PHUIListItemView::TYPE_LINK)
+        ->setHref($this->getApplicationURI()));
+
       $nav->addMenuItem(
         id(new PHUIListItemView())
         ->setName(pht('Edit Room'))