AppWidget: Make widget update quickly

Can't display the Power control widget after power on DUT for
3 mins. Because of the  update intent is received after power
on DUT for 3 mins.

Set the intent to foregound

CRs-Fixed: 707605

Change-Id: I5418c84a7dc79466be7a30bb3672ea41976badb0
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The current pie icons are pretty outdated and neither are they available in XXHDPI resolution.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