work on pull-to-refresh integration
Use SlidingPaneLayout for Servicelist on tablets and add Pull-to-refresh for it
Try to fix AppWidget https certificate issues
Finally cleanup the ServiceListFragment

- use AsyncTaskLoader for loading data
- Use SlidingPaneLayout on all screen sizes, Slide the Servicelist right
to change your bouquet
- Enable Pull-To-Refresh
Compat fixes for older android versions
support more streamtypes in "Play on Dreambox"
Merge branch 'pull-to-refresh'