Revert "p5100: remove DeviceSettings" and integrate into OmniROM

This reverts commit 52d4b594311ccc551e6781bd33bddf32b68b9aa9.
Update ActionBar to fit KitKat's theme (adapted from i9100g)
Update Copyright notices

Change-Id: Iafc98acbe33b952c2819bd99b66f6ff4629a4644