Update the volume panel color to match Hover

The volume panel slides in from the top currently making it look similar to Hove
r. As both the elements slide down from the top, there should be consistency in
terms of design.

Change-Id: Ifa4439f593b390014a3efb672bc2d00eef6fb869
Update Pie QS Icons

The current pie icons are pretty outdated and neither are they available in XXHDPI resolution. This change adds new icons in all resolutions.

Change-Id: I44d777e2976fb00b3b775ecf554fe5e0754c7197