There was an inconsistency between how the label_tag for forms were
generated depending on which method was used: as_p, as_ul and as_table
contained code to append the label_suffix where as label_tag called on a
form field directly did NOT append the label_suffix. The code for
appending the label_suffix has been moved in to the label_tag code of
the field and the HTML generation code for as_p, as_ul and as_table now
calls this code as well.

This is a backwards incompatible change because users who have added the
label_suffix manually in their templates may now get double label_suffix
characters in their forms.

Made URL patterns consistent in docs/ref/contrib/flatpages.txt

The recent improvements should make shared_models obsolete.

This reverts commit 1059da8d, reversing
changes made to 4fa7f3cd.

This reverts commit 22b7870e.

Refs #20483.

Fixed #20483.

This can be used to make Django's test suite significantly faster by
reducing the number of models for which content types and permissions
must be created and tables must be flushed in each non-transactional
test.

It's documented for Django contributors and committers but it's branded
as a private API to preserve our freedom to change it in the future.

Most of the credit goes to Anssi. He got the idea and did the research.

Fixed #20483.

This allows using flush on a subset of the tables without having to
manually cascade to all tables with foreign keys to the tables being
truncated, when they're known to be empty.

On databases where truncate is implemented with DELETE FROM, this
doesn't make a difference. The cascade is allowed, not mandatory.

Refs #19875.

Thanks littlepig for the suggestion.

Fixed #20575 -- Typo in docs/topics/forms/media.txt

Fixed typo: froms -> forms

Fixed typo

Updated submitting-patches.txt

Few quick fixes to the terminology in order to match what is used on the Django Trac at the moment.

Thanks Roman Alexander for the suggestion.

The docs were ambiguous about the time zone for now(), leading people to
assume that it would be the current time zone rather that UTC.

Thanks margieroginski for the report.

Thanks Timo Graham for noticing the failures.

Fixed #19080 -- Fine-grained control over select_related in admin

The patch for #19385 caused a regression in certain generic relations
.exclude() filters if a subquery was needed. The fix contains a
refactoring to how Query.split_exclude() and Query.trim_start()
interact.

Thanks to Trac alias nferrari for the report.

Thanks Fak3 for the suggestion.

Thanks awsum for the suggestion and Pavel Ponomarev and
Florian Hahn for the patch.

Explicit exception chaining for db exceptions by setting __cause__ in py2

Use __cause__ to expose the underlying database exceptions even
under python 2.

Auth views should be reversed by name, not their locations in
`django.contrib.auth.views`. This allows substituting your own
implementations of the auth views.

Thanks wim@ for the suggestion.

A test failed if the path to the Django checkout contained a dot.

Refs #20485.

Thanks Anssi for reporting this performance bottleneck.