[2/2] ElectronBeam: Add an alternative screen-off animation

Change-Id: I9a865715d660831c8b4fe7ddc1f8e070579d1ac0
[2/2] Add battery level around unlock ring

Credits to Omnirom

Change-Id: I0115f0a6f52b02f3f3da0412ae4fa0dd77c02ae0