title: Facebook user_friends permission
body: <p>On my app, i have a feature that uses the user's facebook "user_friends" permission.
  It used to work before they upgraded to API V.2.0, but now it does not:
  When I created the app on FB and used test users (in development mode) my feature that includes this permission worked.
  But, when i turned on the app (to be live) - it does not work.
  So - it works on Test users but not on Live users.
  How is that possible?</p>