Thanks reames at asymmetricventures.com for the report.

Refs #20660.

Thanks stanislas.guerra at gmail.com for the report and
Baptiste Mispelon for the review.

Following the series of commits removing deprecated features in
Django 1.7, here are some more unneeded imports removed and other
minor cleanups.

Thanks Gavin Wahl.

Made GeoDjango GeometryField stop accepting a 'null' keyword argument as per its deprecation in 1.5.

This includes HttpResponse and co. __init__() methods,
django.shortcuts.render_to_response() and the index(), sitemap() sitemap
app views.

refs #20642.

This is to help other ongoing branches which would benefit from
this functionality.

Add support for Oracle, fix an issue with the repr of RawQuerySet,
add tests and documentations. Also added a 'supports_paramstyle_pyformat'
database feature, True by default, False for SQLite.

Thanks Donald Stufft for review of documentation.

Thanks jefftriplett for the report.

This is useful:
- to force a rollback on the exit of an atomic block without having to
  raise and catch an exception;
- to prevent a rollback after handling an exception manually.

Fix typo

Fixed missing initializations in WSGIRequest. Refs #20619