Merge pull request #109 from doopl/master

Use solid action bar style
Fix #107: set keys as part of clearForNewGame.
Fix #106, final part? Paint rest of GameView grey (but see note about Untangle).

Also paint the keyboard view a single background colour (same as behind keys).
drawPoly belongs on GameView.
Simplify resize logic.
Fix #106 some more, as what worked on the emulator didn't in real life.
Err on the side of clipping one too many pixels rather than one too few, if rounding occurred.

This should be entirely harmless because all games leave a margin anyway.

This fixes an intermittent 1-pixel smear at the bottom of Untangle if you drag a node around below the screen.
Add missing action bar shadow on 2.3+, fix keyboard background

Drawables from sdk/platforms/android-L