Set the new room for ParticipantCollection when the active room changes

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

js/app.js

@@ -353,6 +353,12 @@
 				el: 'ul#participantWithList',
 				collection: this._participants
 			});
+
+			this._participants.listenTo(this._rooms, 'change:active', function(model, active) {
+				if (active) {
+					this.setRoom(model);
+				}
+			});
 		},
 		/**
 		 * @param {string} token

js/views/roomlistview.js

@@ -184,8 +184,6 @@
 
 			$sidebar.find('.room-name').text(this.model.get('displayName'));
 
-			OCA.SpreedMe.app._participants.setRoom(this.model);
-
 			if (!$content.hasClass('with-app-sidebar')) {
 				$content.addClass('with-app-sidebar');
 				$sidebar.removeClass('hidden');