Settings: Check to see if menu items are null onPause.

Change-Id: I5463b1eab1017840ec1ec204090c9c61603377a3
Settings: Disable navbar options when navbar disabled.

Change-Id: I675df3fd71e9103ca814370e30c21663870ae53a
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0