RC :  Hide items when not viable

Hides a few of the NavBarAutoHide options when AutoHide
is not enabled.

Also, I went through and restructured our use of getContentResolver.
We were doing that op over and over again.  I just put a protected
global in the parent AOKPfragment and referenced it from there.

Change-Id: Id3a9bb94ba3e4420147f203e794f325c73f1b183
Signed-off-by: Zaphod <mwilson@acesappraisal.com>

Conflicts:
	src/com/aokp/romcontrol/fragments/Lockscreens.java
	src/com/aokp/romcontrol/fragments/Navbar.java
	src/com/aokp/romcontrol/fragments/PowerMenu.java
	src/com/aokp/romcontrol/fragments/Sound.java
	src/com/aokp/romcontrol/fragments/StatusBarBattery.java
	src/com/aokp/romcontrol/fragments/StatusBarClock.java
	src/com/aokp/romcontrol/fragments/StatusBarToggles.java