This adds a test for 511a53b3

Appeared in Opera with ModelAdmin.actions=None.

Thanks Tim Graham for the patch

Fixed #12685 - Ensure that deserialised model instances honor the same arguments as normal models.

Using `BaseCommand.options_list` makes Django use the legacy optparse
parser, which does not set the verbosity attribute correctly. Now the
verbosity argument is always cast to int. Regression in 85686386 (#19973).

Initial report and patch from blueyed.

Made URL application namespaces be set in the included URLconf and
instance namespaces in the call to include(). Deprecated other ways
to set application and instance namespaces.

Also moved it in the project template.

The spirit of the docstring was correct, but referred to an outdated version of the function.

Changed _session_key attribute to a property and implemented basic
validation in the setter. The session key must be 'truthy' and
at least 8 characters long. Otherwise, the value is set to None.

For consistency with AutoField.

If `'loaders'` is present in the `TEMPLATES` options together with
`APP_DIRS` set to `True`, the template engine raises an exception. This
conflict is now detected by the system check templates.E001.

adapt and ProgrammingError are both available on the
sqlite3 module. There's no need to import the internal
_sqlite3 module.

Set ResolverMatch.app_name to the full path of nested application
namespaces.

Clarified docs to say that a non-unique USERNAME_FIELD is permissable
as long as the custom auth backend can support it.

This also speeds up for loops that render the same template
multiple times.