Huge commit. Some major changes are:
- String updates
- Channel sorting
- Navigation improvements
- Updated layouts and drawer look
Updated changelog.
Removed logging and the handling of the back stack.
Support android API 7.
Updated the changelog.
Fixed some lint errors.
Removed logging.
Added menu items in the action bar to remove or cancel a single
recording.
Fixed wrong backward navigation within the settings screens.
No back stack is required anymore.
Fixed highlighting the correct menu. 
The series recording is currently hidden in the adapter.
Improved the channel sorting strings.
Remember the settings mode during orientation changes.