Revert "Support custom authentication backends"

This reverts merge request !334 (merged).

The way custom authentication backends were implemented break too much stuff, or requires workarounds that hide other mistakes. As nothing in AlekSIS uses custom auth backends, and we are currently integratin django-allauth in !413 (merged), I request the feature to be removed.

If someone wants to add a custom authentication backend, they should hook into allauth instead.

@hansegucker Please merge after taking note if you do not have any objective arguments to keep this custom implementation.

Closes #313 (closed)

added part::backend prio::1 type::bug labels

added 1 commit

• 10762433 - Revert "Support custom authentication backends"

Compare with previous version

changed title from Revert "Add test for custom authentication backends and fix a little bit" to Revert "Support custom authentication backends"

changed the description

added 1 commit

• 6be1929f - Revert "Support custom authentication backends"

Compare with previous version

merged

mentioned in commit d6fe6b89