Thanks to knbk for the report.

Created bulk_update() context manager on StateApps. Sped up unregistering
models in reload_models() by using this context mananger.

Thanks Carsten Fuchs.

This continues work to treat Django templates as a library.

Fixed #11078 -- documentation update.

Without that, the Note model would be initially created and then
the tests using that model failed when run in isolation.

The only problem for Oracle was the test, which tested nullity on
text/char fields -- but Oracle interprets_empty_strings_as_null.

Obsolete since refs #23867.

There's absolutely no advantage [and a mild performance hit] to using six.iter*
in these cases.

Refs #23879.

Refs #23879.

Thanks Carl Meyer for the report and review, and Tim Graham for the
review.

This is inspired by Angluar.js
(https://github.com/angular/angular/blob/master/CONTRIBUTING.md), among others.
Thanks to Jeff Triplett for the prod.

Thanks pattypatpat for the report.

Thanks Simon Percivall for the report, and Simon Charette and Tim
Graham for the reviews.

Added a running count of the objects processed by loaddata when
verbosity >= 3.

Thanks to charettes and priidukull for investigating the issue, and to
kurevin for the report.

This fleshes out the documentation around all of the exported
Javascript functions available from the ``javascript_catalog``
view.

Fixed queries where an expression was used in order_by() but the
expression wasn't in the query's select clause (for example the
expression could be masked by .values() call)

Thanks to Trac alias MattBlack85 for the report.

This would break upcoming changes and AdminSite assumptions about
having an app_config for each application that has registered
models.