User interface needs work

I had to look hard to find a audiobook player that would work in the car - ie a large play/pause button.
Things to fix:
- move the skip buttons away from the play/pause. If you touch them accidentally, your skip hours of your book.
- turn off the screen when not in use
- get rid of the skip buttons on the lock screen while listening. You touch those and there goes another few hours of the book.

Kt474367 about Audiobook and Podcast Player, v2.8