Register

Register user with fields defined in the settings.

If the email field of the user model is part of the registration fields (default), check if there is no user with that email or as a secondary email.

If it exists, it does not register the user, even if the email field is not defined as unique (default of the default django user model).

When creating the user, it also creates a UserStatus related to that user, making it possible to track if the user is archived, verified and has a secondary email.

Send account verification email.

If allowed to not verified users login, return token.