message: Use room method to help with DM detection with fallback to summary heroes/counts.
diff: @@ -758,16 +758,13 @@ module.exports = React.createClass({
  },
  _updateDMState() {
  - const me = this.state.room.getMember(MatrixClientPeg.get().getUserId());
  const room = this.state.room;
  if (room.getMyMembership() != "join") {
  return;
  }
  - const roomId = this.state.room.roomId;
  - const dmInviter = me.getDMInviter();
  -
  + const dmInviter = room.getDMInviter();
  if (dmInviter) {
  - Rooms.setDMRoom(roomId, dmInviter);
  + Rooms.setDMRoom(room.roomId, dmInviter);
  }
  },
  