Use, if possible, a room's canonical or first alias when viewing the room

(Only affects rooms the user has never joined)

src/components/views/rooms/RoomDetailList.js

@@ -49,6 +49,7 @@ const RoomDetailRow = React.createClass({
         dis.dispatch({
             action: 'view_room',
             room_id: this.props.room.roomId,
+            room_alias: this.props.room.canonicalAlias || this.props.room.aliases[0],
         });
     },