message: Remove noreferrer on widget pop-out
  Having the referrer allows widgets to do customisation based on what
  riot instance is embedding it. It gets a referrer when we embed it
  in the iframe so there's nothing gained by suppressing it here.
diff: @@ -495,9 +495,9 @@ export default class AppTile extends React.Component {
  _onPopoutWidgetClick(e) {
  // Using Object.assign workaround as the following opens in a new window instead of a new tab.
  - // window.open(this._getSafeUrl(), '_blank', 'noopener=yes,noreferrer=yes');
  + // window.open(this._getSafeUrl(), '_blank', 'noopener=yes');
  Object.assign(document.createElement('a'),
  - { target: '_blank', href: this._getSafeUrl(), rel: 'noopener noreferrer'}).click();
  + { target: '_blank', href: this._getSafeUrl(), rel: 'noopener'}).click();
  }
  _onReloadWidgetClick(e) {
  