Vanir Customization: major cleanup

removed duplicate getContentResolvers
removed duplicate imports
updated comment out descriptions for expanded desktop states
removed duplicate getpreferencescreen references
removed shit-ton of unused API and class imports
swapped longpressbacktokill with expanded desktop
renamed bellybutton to hardware key controls
added preference category for top features "Userspace options"

todo: add a check utility for flash to remove torch on non-flash devices
      remove duplicate longpressbacktokill located in developer options
      add a check utility to remove signal option for wifi devices
      move statusbar mods to it's own class/xml menu?

Change-Id: I1c54d1bf6eb74b6c8b8d140ba7130cc7091814f1