message: Fix listener leak on RoomView
  It looks like this was causing entire detached DOM trees to leak
  in memory by react's internal fibers holding onto them from the
  component.
diff: @@ -485,6 +485,7 @@ module.exports = createReactClass({
  MatrixClientPeg.get().removeListener("Room.timeline", this.onRoomTimeline);
  MatrixClientPeg.get().removeListener("Room.name", this.onRoomName);
  MatrixClientPeg.get().removeListener("Room.accountData", this.onRoomAccountData);
  + MatrixClientPeg.get().removeListener("RoomState.events", this.onRoomStateEvents);
  MatrixClientPeg.get().removeListener("Room.myMembership", this.onMyMembership);
  MatrixClientPeg.get().removeListener("RoomState.members", this.onRoomStateMember);
  MatrixClientPeg.get().removeListener("accountData", this.onAccountData);
  