Fixed #20305 - Added include for polls/static to MANIFEST.in in tutorial.

Thanks monuszko for the report.
Fixed #20274 - Added some clarifying section headings in the test docs.
Fixed #20177 - Corrected docs for django.test.utils.setup_test_environment.

Thanks vlad.london.uk@ for the report.
Remove outdated ForeignKey manager documentation.
Fixed #20354 -- `makemessages` no longer crashes with `UnicodeDecodeError`

Handle the `UnicodeDecodeError` exception, send a warning to `stdout` with the
file name and location, and continue processing other files.
Python 2.5 is not relevant to master.
Fixed inconsistent punctuation in tutorial 5.
Fixed Sphinx error in tutorial 1.
Fixed #20256 -- Corrected startproject --template help text

Thanks n0nam3 for the patch.
Fixed test failures on MySQL.

Some tests failed when the time zone definitions were loaded in MySQL
and pytz wasn't installed. This setup isn't supported.
Fixed #20025 -- Pointed to a MySQLdb fork for Python 3.

Made a few minor compatibility adjustments.
[py3] Stopped iterating on exceptions. Refs #20025.
Marked tests of BinaryFields as expected failures on MySQL and Python 3.

Current ports of MySQLdb are very buggy in this area.
Added an HTTP status code to Django's WSGI application that was missing (reason unknown).
Marked a test as an expected failure on MySQL and Python 3.2.

This test hits a bug in current ports of MySQLdb.
Removed fragile admin validation of fields on ModelForm

Refs #19445
Removed some failing tests missed in 1556b1c3b7a18cadf4d66d2ab6301d7fe8646ba5