Settings: follow kitkat's ui

- manage apps; tab selector and ram usage
- battery data usage bar
- app widget toggle

Change-Id: I804b4b47563545d7ab124f4cc4800ef4034bf754

Conflicts:
	res/values/colors.xml
Notification drawer: full swipe to switch detection (2/2)

Add an option to detect swipe to switch on full screen, not just the bottom bar
from - https://github.com/PAC-man/android_packages_apps_Settings/commit/de011413d05c19fa8e763af3c4f33d888855dde0

Change-Id: I213c74a274bea5cbd724ed114949ecabe09b7c0d