Translucent volume panel

core: fix volume panel more button transparency

Decrease Vol Panel Transparency
SystemUI: unbreak RecentsPanel with translucent decors
Update the color of the expandable volume panel icon

This still retains the old settings icon since it happens to fit perfectly. Pressing it does indeed show you a bunch of sliders like the icon indicates.

Also add xhdpi and xxhdpi versions.
Circle battery

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java