Fixed #29275 -- Made assertFormError() output "(actual errors: none)" instead of "(actual errors: )".

Fixed #28718 -- Allowed user to request a password reset if their password doesn't use an enabled hasher.

Regression in aeb13894.
Reverted changes to is_password_usable() from
703c2666 and documentation changes from
92f48680.

Regression in c76d8742.

Refs #11278 -- Clarified RelatedManager differences between reverse one-to-many and many-to-many relations.

Thanks Lynn Cyrin for contributing to the patch, and Nick Pope for review.

In preparation for handling forward references (refs #26291).

Fixed #29229 -- Fixed column mismatch crash when combining two annotated values_list() querysets with union(), difference(), or intersection().

Regression in 7316720603821ebb64dfe8fa592ba6edcef5f3e.

Thanks Tim Graham for the review.