Switch to new Superuser

Change-Id: I9d91392ad6fbc9953d19059ab59b91d214c00e0c
Hide Superuser entry if root access for apps is disabled.

Change-Id: Ibb77ba5a0fccf22564a26b8b1e13f7762c65718e

Conflicts:

	src/com/android/settings/DevelopmentSettings.java
Fix scrollbars appearing out of place in Superuser.

Change-Id: Ia206623716192e479901c02cf94de84a29e0479e
Move Superuser header below Developer Options

Change-Id: Ica85aae0d3f06e6c5e837946cfc893d9e2f4fb7d

Conflicts:

	res/xml/settings_headers.xml