Compare room number properly with null.

Signed-off-by: Simon Eisenmann <simon@struktur.de>

static/js/directives/chat.js

@@ -319,7 +319,7 @@ define(['underscore', 'text!partials/chat.html', 'text!partials/chatroom.html'],
                 };
 
                 scope.$on("room", function(event, room) {
-                    if (room) {
+                    if (room !== null) {
                         scope.showRoom(group_chat_id, {title: translation._("Group chat")}, {restore: true, minimized: true});
                     } else {
                         scope.hideRoom(group_chat_id);

static/js/directives/usability.js

@@ -93,13 +93,13 @@ define(['jquery', 'underscore', 'text!partials/usability.html'], function($, _,
       });
 
       $scope.$on("room", function(event, room) {
-        //console.log("roomStatus", status);
+        console.log("roomStatus", room !== null ? true : false);
         if (complete) {
           if (initializer !== null) {
             $timeout.cancel(initializer);
             initializer = null;
           }
-          ctrl.setInfo(room ? "room" : "noroom");
+          ctrl.setInfo(room !== null ? "room" : "noroom");
         }
       });