message: Fix widgets resetting when going to the top-left
  Remove the hash from the parentUrl because this change when we
  change rooms.
diff: @@ -117,8 +117,9 @@ export default class AppTile extends React.Component {
  const params = qs.parse(u.query);
  // Append widget ID to query parameters
  params.widgetId = this.props.id;
  - // Append current / parent URL
  - params.parentUrl = window.location.href;
  + // Append current / parent URL, minus the hash because that will change when
  + // we view a different room (ie. may change for persistent widgets)
  + params.parentUrl = window.location.href.split('#', 2)[0];
  u.search = undefined;
  u.query = params;
  