Facebook Android SDK 3.19.1

Summary:
    see https://developers.facebook.com/android/change-log-3.x/

Upgrading:
    https://developers.facebook.com/docs/android/upgrading/
Facebook Android SDK 3.20

Summary:
    see https://developers.facebook.com/android/change-log-3.x/

Upgrading:
    https://developers.facebook.com/docs/android/upgrading/
Facebook Android SDK 3.20

Summary:
    see https://developers.facebook.com/android/change-log-3.x/

Upgrading:
    https://developers.facebook.com/docs/android/upgrading/
Facebook Android SDK 3.21

Summary:
    see https://developers.facebook.com/android/change-log-3.x/

Upgrading:
    https://developers.facebook.com/docs/android/upgrading/
* допускать запрос если access_token добавлен вручную