Add SystemUI Settings and StatusBar Settings Section

Added with this, StatusBar Carrier and Navigation Bar Height

Nexus 5 Experience Files added
Fix derp in Navigation Bar Height implementation

Change-Id: I35cdd09a262144ce13e03af2b35c752962f3c53f
Fix more derps in Navigation Bar Height Implementation

Change-Id: I48e3cb28e05e4e39b9090f281a7917a6873879ec