Make policy change to allow changing of height/width (1/2)

Change-Id: I36191e757a5bd00e1ce7fb4754e0d7929ad93b90
adjust sysui to accept navbar height mod
Add NavBar Glow, Alpha mods, etc

Change-Id: I494a10ff31c98b1cd88aedaf55957fa69be447af
Make navbar themeable