HALO bigger update

1. gestures icons without outlines
2. completely re-done speechbubbles
3. empty red batch says M for message
4. speech bubble is animated and moves around
5. new batch animation when gesture is active
6. dead zone buffer fixed
7. empty notification text fixed (with app name for now)

Change-Id: I85cca0240827aabb5f5f773ace24222bf711945d

Conflicts:

	packages/SystemUI/res/drawable-xhdpi/halo_back_left.png
	packages/SystemUI/res/drawable-xhdpi/halo_back_right.png
	packages/SystemUI/res/drawable-xhdpi/halo_clear_all.png
	packages/SystemUI/res/drawable-xhdpi/halo_dismiss.png
	packages/SystemUI/res/drawable-xhdpi/halo_message.png
	packages/SystemUI/res/drawable-xhdpi/halo_silence_left.png
	packages/SystemUI/res/drawable-xhdpi/halo_silence_right.png
	packages/SystemUI/res/layout/halo_speech.xml
	packages/SystemUI/res/values/dimens.xml
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java
	packages/SystemUI/src/com/android/systemui/statusbar/halo/HaloProperties.java