[1.7.x] Bumped django_next_version in docs config.
[1.7.x] Silenced PostGIS deprecation warnings.

Backport of a6fc1859 from master
[1.7.x] Fixed #23257 -- Updated docs for new django-jython release.

Backport of f3ef55ea7a from master
[1.7.x] Removed some tabs in the docs.

Backport of 73ff4498aa from master
[1.7.x] Fixed #22336 -- Added path matching for makemessages ignore option

This fixes a regression introduced by 9012a9e200.
Backport of 8fe406864c from master.