First UI changes

Changed UI accent color in XML (hasn't changed everywhere thou)
Changed schedule list items BG
Fix for importing issues on Android Studio 0.2.11

See https://code.google.com/p/android/issues/detail?id=59531
Fix double spaces in the "browse sessions" list items
Changed "browse sessions" list items UI
Fixed accent color in drawables
Changed schedule list item text colors

Also added the "current block" UI hint on the list text items
Huge unused stuff cleanup, fixed Actionbar tabs dividers
Changed Actionbar and "What's on" BG
Updated Actionbar logo
Fixed crash on tablets
Fix Action bar text color
Tweaked the Actionbar logo and icon
Merge pull request #42 from rock3r/schedule-redesign

Schedule redesign