message: Pass correct args when creating event permalink in context menu
  After the permalink API was changed in
  it seems we forgot to
  update this call site, so it was creating `<room>/<room>` links, instead of
  `<room>/<event>`.
  Fixes
diff: @@ -307,10 +307,7 @@ module.exports = React.createClass({
  let permalink;
  if (this.props.permalinkCreator) {
  - permalink = this.props.permalinkCreator.forEvent(
  - this.props.mxEvent.getRoomId(),
  - this.props.mxEvent.getId(),
  - );
  + permalink = this.props.permalinkCreator.forEvent(this.props.mxEvent.getId());
  }
  // XXX: if we use room ID, we should also include a server where the event can be found (other than in the domain of the event ID)
  const permalinkButton = (
  