[1.7.x] Update squashmigration docs to also mention circ dep errs (refs #23337)
[1.7.x] Fixed schema test for Oracle 11.2.0.1 which is used in Django Project's CI.

Refs #23073 Workaround.

Refs #22738 Repeats the mysql "offense". When the issue is solved, the
Oracle special case should be made to play with the solution (that is,
Oracle should be fixed the same way that mysql and the 3rd-party backneds
are).

Backport of 56252e7 from master
[1.7.x] Fixed #23343 -- Typo in docs/ref/class-based-views/generic-date-based.txt.

Backport of 14aff0bd82 from master
[1.7.x] Fixed #23342 -- Clarified warning about naive time objects.

Thanks to apollo13 for suggested wording.

Backport of b7336ec179 from master
[1.7.x] Fixed #23324 -- Mentioned Site.id in contrib.sites docs.

Backport of a76aab3583 from master
[1.7.x] Added new supported languages
[1.7.x] Fixed #23344 -- Removed duplicate docs for file upload settings.

Backport of c7fa27d702 from master
[1.7.x] Fixed #23352 -- Added tests for MigrationGraph.{forwards,backwards}_plan

Backport of be4baaefe2 from master
[1.7.x] Fixed #23341 -- Added migration name to nonexistent migration error in makemigrations.

Backport of abd640fbdf from master
[1.7.x] Fixed #22154 -- Added "Built-in" to some class-based views titles.

Backport of 0c9f40f776 from master
[1.7.x] Fixed #23131 -- Documented serialization of callable functions in migrations.

Backport of 50ae4b4b9e from master
[1.7.x] Removed unnecessary absolute_imports.

Backport of e0cf030194 from master
[1.7.x] Made main user disconnect after creating test user/tablespaces on Oracle

Backport of 4c85a0d95f from master
[1.7.x] Clarified that makemessages -l takes a locale name, not a language code.

Backport of 5473c36cef from master
[1.7.x] Fixed spelling mistake in file docs.

Backport of a3e88e64a4 from master
[1.7.x] Fixed #23362 -- Clarified "database columns as attributes" in tutorial.

Backport of 035f2e699c from master
[1.7.x] Fixed #17719 -- Documented that template syntax sequences cannot be used as string literals.

Backport of e02f45d5ea from master
[1.7.x] Fixed #19312 -- Documented MySQL TIMESTAMP columns cannot be used with USE_TZ=True.

Backport of 348c89cbfb from master
[1.7.x] Fixed #17707, #20734 -- Added examples to URL namespacing docs.

Thanks Daniele Procida for review.

Backport of a2bcec3491 from master
[1.7.x] Fixed #23250 -- Documented that ModelMultipleChoiceField queryset may be None.

Backport of ced3e303ca from master