Revert "Buttons: Prevent toggling disable hardware keys too quickly"

This reverts commit 337f537a41344bb310460ff64cf1154a9c5b4623.

Conflicts:
	src/com/android/settings/cyanogenmod/ButtonSettings.java
Revert "Buttons: Prevent toggling disable hardware keys too quickly"

This reverts commit 2b47619e0479107ea86855a33ff940642764b421.

Conflicts:
	src/com/android/settings/cyanogenmod/ButtonSettings.java
Revert "Rework runtime toggle of navbar to allow disabling hard navigation keys"

This reverts commit a2ff4f5af703aa21c932298bd63d990ae1feed5b.
Revert "[TEMP] Revert "Active notifications:""

This reverts commit 00eb4c07da81a57b7d49ce6c215aaa8f4c985d80.