Update: Various cosmetic changes and code cleanup

Update includes new favourite screen and additional options for home
screen background
Update: First push for Gotham compatibility

PR starts to incorporate some of the new container-filling features of
Gotham, texture-specific colordiffuse and others.

Fixes rapid scrolling of the hub sections and adds the update / now
playing buttons to the appbar that were removed from the context menu.
Update: Continues update to Gotham

Includes new 'In progress' window for episodes and movies.
Update: More changes for Gotham compatibility

Includes some additional file cleanup and re-organizing includes.
Fix: List not visible in TV Next Aired window
Merge pull request #1 from Sranshaft/master

sync with sranshaft