Settings: Superuser: Add root access options to dev/settings

PS2: remove dupe entries
Adapt for SD

Change-Id: Ib3b77941a4971b79af4c9e0b8b989c60d3bfd4e8
Signed-off-by: houst0nn <houstonn@gmail.com>

Conflicts:
	res/values/pa_arrays.xml
	res/values/pa_strings.xml
	src/com/android/settings/DevelopmentSettings.java