The view is called to create an account using the data provided by FC
at account creation.
The data provided is put in a protected token and sent to the next url.
If FC provides an email, the view redirects to the activation view.
If an email is not provided, the view redirects to the email registration
view.
The confirm_data parameter of the activation view is a plugin setting.
Account creation with FC means no password.
After a successful sso and no user is authenticated the user is redirected
on the login page. On the login page, the user may be asked to login with a
password or to create a new account. The plugin login button is hidden to avoid
an unecessary loop.
The patch add an option to display an other button that the login button.
This button reference the registration page and is filled with data from
the sso. If skip resgitration with prefilling data options are set on authentic
the button leads to a direct account creation.