Rewrite NowPlaying Screen

NowPlaying screen is now a panel sliding up from the bottomactionbar.
Depends on @umano 's AndroidSlidingUpPanel library
Update Version number and change how its handled

Version number displayed in 'about' section of preferences page is now
pulled in directly from androidmanifest.
Redesign Listview Items and Artist page view
Upload assets missed in last commit
Add nowplaying queue button active state
Redesign gridview items layout
Fix: rest nowplaying queue button active state

Reset nowplaying queue button active state when panel gets collapsed
Scale/crop src image from top/left in trackbrowser
Drag/Sort Now Playing queue

Now playing queue now supports drag/drop re-ordering as well as swipe to
remove
Drag/Sort Playlist editing

Playlist editing now supports drag/drop re-ordering as well as swipe to
remove
Update README.md

Update README to reflect latest changes and dependencies
Merge branch 'master' of https://github.com/Splitter/android_packages_apps_apolloMod