Register with Facebook

[AmFlint]

As a User, I am able to register with Facebook so I don't waste time filling in a form and validating my email address

Technical

• Create an endpoint POST - /register/facebook, with parameters:
  • facebook_id: string|required - facebook ID of user
  • username: string|required - combination of firstname and lastname retrieved from Facebook API
  • profile_picture: string|required - facebook profile picture for user