Concrete-datastore

Changed

- When throttling enabled, check if the user making the request is either an AnonymousUser or an AbstractUser

Changed

- Update the links within the documentation

Changed

- Changed default permissions for entrypoint `/user/*` (`request.user` should be at least manager), always allow "at least authenticated" user to access `/account/me/`

Added

- Add possibility for register backends in order to run custom functionnalities before/after creating a user by register endpoint

Added

- Add entrypoint to serve datamodel (json and yaml)
- Allow anonymous creation on Concrete instances with throttling conditions
- Add settings to configure the path for OpenAPI schema and the Swagger interface
- Allow sending emails asynchronously with celery

Changed

- Remove nested foreign keys from open api schema for methods POST PUT and PATCH
- Rename unittests from `tests_` to `test_`
- sets extra fields: Check that the field is in fields before checking the type