6fb93463a8
We use django-ratelimit to limit per IP login attempts, and then we use django-ratelimit-backend to limit per username login attempts. This change replaces the usage of django-ratelimit-backend with another instance of django-ratelimit so that both limits can be managed by one library. This is the first step in being able to fully excise django-ratelimit-backend from edx-platform. Note that we're still using the `RateLimitMixin` in openedx/core/djangoapps/oauth_dispatch/dot_overrides/backends.py because studio and the admin UI still relies on that for rate limiting. Those login paths will have to be updated before we can remove the mixin from our auth backend.
Open edX -------- This is the root package for Open edX. The intent is that all importable code from Open edX will eventually live here, including the code in the lms, cms, and common directories. If you're adding a new Django app, place it in core/djangoapps. If you're adding utilities that require Django, place them in core/djangolib. If you're adding code that defines no Django models or views of its own but is widely useful, put it in core/lib. Note: All new code should be created in this package, and the legacy code will be moved here gradually. For now the code is not structured like this, and hence legacy code will continue to live in a number of different packages.