galaxys2: move device settings from i9100

Change-Id: I9209974db9ce5b013fc56f2249ff8b4c511d5eaa

Conflicts:
	DeviceSettings/res/values/strings.xml
	DeviceSettings/res/xml/screen_preferences.xml
	DeviceSettings/src/com/cyanogenmod/settings/device/DeviceSettings.java
	DeviceSettings/src/com/cyanogenmod/settings/device/ScreenFragmentActivity.java
	DeviceSettings/src/com/cyanogenmod/settings/device/Startup.java