Signed-off-by: Jannis Leidel <jannis@leidel.info>

Thanks Baptiste Mispelon.

Fix two typos in database transactions docs

Thanks Baptiste Mispelon for the report.

Fixed #20327.

It used to raise "DatabaseError: no such savepoint" with the old
transaction management. Closes #15117.

in CachedStaticFilesStorage. Thanks zyegfryed for his work on the patch.

Refs #20324. Thanks dwisehart for the suggestion.

This reduces random failures to load static files with Google Chrome.

Thanks mark.harviston et gmail.com for the report.

Translations for the Django framework are now hosted on the
django-core Transifex project, and the django project is only
dedicated to a team-only hub project.

Fix CharField typo in legacy-databases.txt docs

The example Person model in the legacy databases HowTo had a typo referring to ChaField instead of Charfield

Replaced "the the" in the tutorial with "the".

Updated reusable apps doc's review of project layout

Added 'polls' sub directory under static and reorganized to more accurately represent the project; compared using 'tree' command.

Refs #20104.

As explained in ticket #20104, the use of versionchanged/versionadded
was confusing.

To solve this ambiguity these directives no longer accept a second
argument but now they only receive the version number (1st arg) and then
a content with the proper comment.

MergeDict evaluates now to False if all contained dicts are empty.
Thanks til for the report and the initial patch.

Refs #17840. Thanks Carl Meyer for noticing the omission.

Thanks cody.j.b.scott@

Thanks bmispelon.

Thanks jim at hellolocals.com for the report.

Thanks to mossplix for the review and bmispelon for the review.

The OGRInspectTest.test_time_field does still not succeed with these
databases (even when removing the postgis guard), but at least it's now
possible to setup a datasource.