Fix comments if activity stream setting is disabled

Signed-off-by: Julius Härtl <jus@bitgrid.net>

js/service/BoardService.js

@@ -4,20 +4,20 @@
  * @author Julius Härtl <jus@bitgrid.net>
  *
  * @license GNU AGPL version 3 or any later version
- *  
+ *
  *  This program is free software: you can redistribute it and/or modify
  *  it under the terms of the GNU Affero General Public License as
  *  published by the Free Software Foundation, either version 3 of the
  *  License, or (at your option) any later version.
- *  
+ *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU Affero General Public License for more details.
- *  
+ *
  *  You should have received a copy of the GNU Affero General Public License
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *  
+ *
  */
 import app from '../app/App.js';
 /* global app OC angular */