VentureTweaks bring-up

Huge clean-up for Settings and great new base for VentureROM-L

- Added new activity to create VentureTweaks
- All things are now in categories (current categories: Status Bar, Nav Bar, Buttons)
- All strings and stuff are cleaned up so its easier to add more things

Signed-off-by: Chintan Shah <cgintan1998@gmail.com>

Conflicts:
	res/values/venture_strings.xml
	res/xml/button_settings.xml
	res/xml/display_settings.xml
	src/com/android/settings/venture/StatusBarSettings.java