Fixed #21222 - Documented that 'default' and 'other' must be different databases when running tests.

Thanks vernondcole for the suggestion.

The wrong exception was being caught when detecting the presence of GeoIP.
Thanks to ramiro for the report.

Thanks to vajrasky for the report and patch.

Fix grammatical errors in email documentation

Thanks yann0 at hotmail.com for the report.

Thanks jaylett for the patch.

The package renaming restores the older package names (which were also the
documented package names). This doesn't affect test discovery because the
module in question doesn't contain any tests.

Thanks to Carl for the design discussion.

Thanks to Carl and Shai for the discussion.

* header selected twice -merged
* match indentation throughout
* color names to hex

refs #21220.

refs #21220.

This reverts commit 698dd82e.

The patch introduced a backward incompatible change.

Refs #13749 and #21220.

Thanks hvdklauw for the report and patch.

Thanks hjwp for the report.

Thanks Ramiro for the report.

Thanks Xelnor for the patch.

There were multiple cases where join promotion was a bit too aggressive.
This resulted in using outer joins where not necessary.

Refs #21150.

Added tests for a .annotate().select_related() join promotion failure.
This happened to work on master but was currently untested.

Thanks to berkerpeksag for the report and to claudep
for the review.

Thanks bartTC for the report.

Don't set a global default interpreted role function for reStructuredText.
Instead, use the `default-role` directive to change the default only within
the `parse_rst()` function.

Thanks Malcolm Tredinnick for the report.

Added docs/internals/mailing-lists.txt documenting the use of django's
mailing lists. All references across docs changed to point to this page.

The referencing makes use of substitution because there's no way to make
a :ref: link in a non-inline fashion in Sphinx. It also makes use of
rst_epilog Sphinx conf for making this substitutions across all the
docs.

Thanks Melevir for the suggestion.

Thanks ryan at ryangallen.com for the report.

Thanks ppetrid at yawd.eu for the suggestion.

Fixed #19182 -- Fixed ModelAdmin.lookup_allowed to work with ('fieldname', SimpleListFilter) syntax.

Thanks gauss for the report.

Thanks Michael Manfre for the report, Raphaël Barrois for the patch and
Claude Paroz, Aymeric Augustin for the reviews.

Refs #7936.