update to PIL for fan art, new layout

- update to latest ibaa Version
- change from php for backgrounds to PIL Solution
- new design for almost every view
- redesign most views
- bugfixes

new features:
- more infos for pause screen on playing video (with setting to turn
off -> Video OSD Settings)
- new layout for tv shows: flow (large grid layout)
- setting for start tab (Library, Shared Libraries or Channels,
TopLevel Settings)
- minor enhancements