message: Don't show/hide the right panel depending on window size
  Fixes
diff: @@ -1699,12 +1699,6 @@ export default createReactClass({
  if (this._windowWidth <= showLhsThreshold && window.innerWidth > showLhsThreshold) {
  dis.dispatch({ action: 'show_left_panel' });
  }
  - if (this._windowWidth > hideRhsThreshold && window.innerWidth <= hideRhsThreshold) {
  - dis.dispatch({ action: 'hide_right_panel' });
  - }
  - if (this._windowWidth <= showRhsThreshold && window.innerWidth > showRhsThreshold) {
  - dis.dispatch({ action: 'show_right_panel' });
  - }
  this.state.resizeNotifier.notifyWindowResized();
  this._windowWidth = window.innerWidth;
  