Lockscreen Notifications: disable dynamic width for devices <= xhdpi
Navigation Bar height setting [1/2]

Conflicts:
	core/java/android/provider/Settings.java
Revert "Disable navigation bar "on the fly" - Minor Fix"

This reverts commit 4ab958c4e33ae74b26b366badb15df47c2cdc29d.
Revert "Disable navigation bar "on the fly", without reboot"

This reverts commit f239ade7e6aa651592255a3024babf36c6a0a499.

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
Add an option to enable/disable the Navigation Bar (1/2)

Thanks SlimRoms for the codes!

Conflicts:
	core/java/android/provider/Settings.java

Conflicts:
	core/java/android/provider/Settings.java