Bug 1069028 - Implement Loop panel footer layout/styling with FxA pieces. r=MattN

--HG--
extra : rebase_source : 0e790de0b084de66caa1d0ad38fb381ed6e40273
Bug 1084529 - Move hardcoded colors to resources on Android. r=mcomella

--HG--
extra : rebase_source : 8e3d8eb16d6b03066b699d5d344c8d4a828e44b5