message: Style fixes for LoggedInView
  PRing this becaise I was going to change LoggedInView, so did
  some code style updates, but then decided the do the change
  elsewhere.
diff: /*
  Copyright 2015, 2016 OpenMarket Ltd
  +Copyright 2017 Vector Creations Ltd
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  @@ -162,19 +163,19 @@ export default React.createClass({
  },
  render: function() {
  - var LeftPanel = sdk.getComponent('structures.LeftPanel');
  - var RightPanel = sdk.getComponent('structures.RightPanel');
  - var RoomView = sdk.getComponent('structures.RoomView');
  - var UserSettings = sdk.getComponent('structures.UserSettings');
  - var CreateRoom = sdk.getComponent('structures.CreateRoom');
  - var RoomDirectory = sdk.getComponent('structures.RoomDirectory');
  - var HomePage = sdk.getComponent('structures.HomePage');
  - var MatrixToolbar = sdk.getComponent('globals.MatrixToolbar');
  - var GuestWarningBar = sdk.getComponent('globals.GuestWarningBar');
  - var NewVersionBar = sdk.getComponent('globals.NewVersionBar');
  -
  - var page_element;
  - var right_panel = '';
  + const LeftPanel = sdk.getComponent('structures.LeftPanel');
  + const RightPanel = sdk.getComponent('structures.RightPanel');
  + const RoomView = sdk.getComponent('structures.RoomView');
  + const UserSettings = sdk.getComponent('structures.UserSettings');
  + const CreateRoom = sdk.getComponent('structures.CreateRoom');
  + const RoomDirectory = sdk.getComponent('structures.RoomDirectory');
  + const HomePage = sdk.getComponent('structures.HomePage');
  + const MatrixToolbar = sdk.getComponent('globals.MatrixToolbar');
  + const GuestWarningBar = sdk.getComponent('globals.GuestWarningBar');
  + const NewVersionBar = sdk.getComponent('globals.NewVersionBar');
  +
  + let page_element;
  + let right_panel = '';
  switch (this.props.page_type) {
  case PageTypes.RoomView:
  