message: Remove Room.accountData listener on unmount
diff: @@ -249,6 +249,7 @@ var TimelinePanel = React.createClass({
  client.removeListener("Room.redaction", this.onRoomRedaction);
  client.removeListener("Room.receipt", this.onRoomReceipt);
  client.removeListener("Room.localEchoUpdated", this.onLocalEchoUpdated);
  + client.removeListener("Room.accountData", this.onAccountData);
  }
  },
  