NavigationBar : Only inflate once

Since the navbar now has updateResources(), there is no need to reinflate
it upon a theme change.

Change-Id: Ie4753a767a1cb45eb459ee692d16067f83cc7d23
Merge "NavigationBar : Only inflate once" into cm-10.1
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1-mb52x