message: also update e2e icon once the room becomes encrypted
diff: @@ -591,6 +591,10 @@ module.exports = React.createClass({
  this._updatePreviewUrlVisibility(room);
  }
  + if (ev.getType() === "m.room.encryption") {
  + this._updateE2EStatus(room);
  + }
  +
  // ignore anything but real-time updates at the end of the room:
  // updates from pagination will happen when the paginate completes.
  if (toStartOfTimeline || !data || !data.liveEvent) return;
  