message: make dom tree similar to eventtile so red lozenge style applies
diff: @@ -119,12 +119,14 @@ export default class EditHistoryMessage extends React.PureComponent {
  "mx_EventTile_sending": isSending,
  "mx_EventTile_notSent": this.state.sendStatus === 'not_sent',
  });
  - return <li className={classes}>
  + return <li>
  + <div className={classes}>
  <div className="mx_EventTile_line">
  <span className="mx_MessageTimestamp">{timestamp}</span>
  { contentContainer }
  { this._renderActionBar() }
  </div>
  + </div>
  </li>;
  }
  }
  