Smart Control

Adds the ability to Play/Pause video by waving above the
screen using the proximity sensor.

This commits also enables the settings activity in
the Gallery app.

PS 2 : Fix Spaces

Change-Id: Icd4d392d5a9338ca2c92944749653a9873ceb48d

Conflicts:
	res/menu/albumset.xml
	src/com/android/gallery3d/app/AlbumSetPage.java