Use navbarhide is enough for now

Change-Id: I5ce01d7fc74eb2c2c15286bc3e865e6306260888
Add back NavbarHide Toggle 1st

Change-Id: I0b572ea4ae5cb2227182d6a39779701ececde2cd

Conflicts:
	core/res/res/layout/global_actions_navbar_mode.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	policy/src/com/android/internal/policy/impl/GlobalActions.java
Fix divisions by zero on boot.

Change I976ffae3a56d411b00026f86b16efa9743a23293 introduced a problem
where depending on the rotation settings the WM override display
configuration would be filled with invalid values.
Fix that by correctly checking that the display is ready prior to
setting the override configuration.

Change-Id: Ia3fd7603d9c1212cd32536803b4c12390a798606