Frameworks: Implement Dynamic System Bars (1/2)

This commit implements DSB. Simple as that.

ported to cyanogenmod.

Change-Id: I3bc7102b2139fd1fa3de22aac096bd2a75bde878
Frameworks: Fix NavigationBarView derp

Change-Id: Ie217ea2731baf5fe95d93220cd660840822929a7