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
Merge branch 'kitkat' of https://github.com/VanillaUnicorn/packages_apps_Settings into kitkat