[1/2] Base: ActiveDisplay (rework interface)

really fix AD buggy stuff
tested with Music play
tested with No lockscreen
tested with faster screen turn off
check all sensor going off if AD not Showing or Disabled
fix notification posted/removed
make AD using System Window so it will covered all screen
fix Navbar translucent if Lockscreen Blur merged :P
now using Rounded Image
also introduce new RoundedImageView widget
 courtesy of @vinc3m1 (thanks)
fix build

Change-Id: I1fc3047496cce71cefc1718b8ef3f4c4fc1605eb

Patchset: 12
https://gerrit.omnirom.org/#/c/5132/