Double tap to sleep on navigation bar [2/2]

Change-Id: I7bb7f4fe183d7dddbe8506d9115fc90f287addef

Conflicts:
	res/values/custom_strings.xml
	res/xml/double_tap_sleep_settings.xml
Merge https://github.com/TeamBliss/android_packages_apps_Settings into kk4.4
Merge remote-tracking branch 'upstream/kk4.4' into kitkat