Graph API v2.2 - User#token_for_business acts as "Identifier for Vendor" on iOS

https://developers.facebook.com/docs/apps/changelog#v2_2
Graph API v2.2 - add page attributes

* impressum
* global_brand_page_name
* global_brand_parent_page
* name_with_location_descriptor
Graph API v2.2 - page settings & app permissions