This merge request is the base of the migration of beat/beat.web> to Django 3.
Preliminary work includes:
- Fix all applications with regard to the namespace handling
- Fix all missing on_delete parameter in both models and migration
- Removal of obvious Python 2 code path
- Example fix of URL_PREFIX abuse
- Port of login handling to new view system
- Update call to function that have become properties
- Update to imports
Related issues:
Fixes #561 (closed)
Fixes #559 (closed)
Part of #558 (closed)