Update Raw info strategy for new Instagram API

[db0sch]

Update #raw_info to match new Instagram API

According to this FB documentation: https://developers.facebook.com/docs/instagram-basic-display-api/getting-started The API is returning only the user_id with a temporaty token.

It's up to the dev then to:

• Fetch the long live token
• Fetch user information
• Fetch media

In the OmniauthCallbacksController#instagram

[khier996]

When is this change going to be included in an actual release? The gem is unusable now.

[db0sch]

We've been using the omniauth-instagram-graph gem to handle instagram omniauth strategy and it works.

This one (omniauth-instagram) seems unmaintained and should not be used