HALO: Drawable changes for hdpi and mdpi for the last upstream update
HALO: Tablet Mode is unsupported for now.
Update HALO icons for notification

Follow up AOSP style
Fix the actionbar cab background on xxhdpi device eg. htc dna

on devices like dna when in gmail or messaging for example selecting a message or thread by long pressing activates the actionbar to the cab_backgrounds. The xhdpi ones weren't drawing right cause a half glow in the actionbar. Adding xxhdpi drawables has fixed this effect.

the size was a guess for now.

Signed-off-by: travp624 <travp624@gmail.com>