Clearer explanation when exception has no message

"No exception supplied" is misleading; actually there is an exception,
but there's no message string.
Fixed documentation of disable_constraint_checking

The docstring and base implementation of disable_constraint_checking do not indicate that a return value is expected for proper behavior.
small typo, example pk=27 but description pk=24
Make the example usage of import_by_path less confusing.

Using import_by_path to import import_by_path is a really odd use case
and makes the code example difficult to read.
Merge pull request #1072 from hrbonz/doc_serialize_typo

Fixed typo in serialization docs.
Merge pull request #1073 from mjtamlyn/import_by_path-docs-fix

Made the example usage of import_by_path less confusing.
Fixed #20415 -- Ensured srid is not localized in openlayers template

Thanks pierremarc07 at gmail.com for the report.
Fixed #19712 - Clarified admindocs regarding which attributes appear.

Thanks Daniele Procida for the report.
Fixed misleading heading on admindocs models page; refs #19712.
Fixed #20388 -- Test failures under Oracle.

Add "FROM DUAL" to SQL selecting constants in tests for Oracle.
Fixed #20421 - Typo in class-based view docs.
Fixed #20357 -- Allow empty username field label in `AuthentificationForm`.
Updated my bio.
Removed "specialists".

The distinction's not really one we make any more, so updated the docs
accordingly.
Fixed #5472 --Added OpenLayers-based widgets in contrib.gis

Largely inspired from django-floppyforms. Designed to not depend
on OpenLayers at code level.
Fixed #20426 -- Added some extra info to the auth forms.

Thanks to Joel Hansson for the suggestion and Curtis Maloney for the initial
patch.
Added myself to committers.
Remove unnecessary and problematic parent class from SuccessMessageMixin

refs #16319, thanks to bmispelon for the catch
Replaced an antiquated pattern.

Thanks Lennart Regebro for pointing it out.
Modernize the CSRF migration helper.

Thanks Lennart Regebro for spotting that code.