[1.7.x] Fixed #22392 -- Corrected deployment instructions for Apache 2.4.

Thanks zjcheah at yahoo.com for the report.

Backport of 0f37d2e4c0 from master
[1.7.x] Fixed #22443 -- Document smtp.EmailBackend.timeout default value

Django 1.7 introduces a new timeout parameter for the SMTP email backend:
http://docs.djangoproject.com/en/dev/topics/email/#django.core.mail.backends.smtp.EmailBackend.timeout

However, there was no mention of the default value for this parameter.

Backport of 4e3d8ae61055dbb83d193585f2f36af6537b31cc from master.
[1.7.x] Added RemoteUserMiddleware to middleware reference page.

Backport of 465980d070 from master
[1.7.x] Added a note regarding django.contrib.auth.authenticate.

Thanks Josh Brown for the suggestion.

Backport of ae5b662796 from master
[1.7.x] Fixed #22453 -- Corrected DoesNotExist message in docs.

Thanks Eugenio Cano-Manuel.

Backport of eefad142de from master
[1.7.x] Fixed spelling errors in documentation.

Backport of b5ce21accb from master
[1.7.x] Fixed #22457 -- Fixed contributing guide w/o github set-up

The published commnand was not working when the user did not have
the git client set-up with the public-key. Changed the contributing
guide to clone it from https instead.

Backport of 28102991172ab931d030412275f926c1b05c688d from master.
[1.7.x] Fixed #22460 -- Explicity remove constraints when dropping a related field.

Backport of 0e45669fa9 from master
[1.7.x] Fixed #22455 -- Documented return values for send_mail and send_mass_mail

Backport of 7cd74fc96ee982acfed7a98e76d4623eabde146d from master.
[1.7.x] Fixed #22434 -- Retain ordering on related sliced subqueries.

Thanks maciej.pawlisz for the report, and charettes for the review.

Backport of a13df671a5 from master
[1.7.x] Fixed #22220 -- Added more examples to reverse() documention.

Thanks EvilDMP for the suggestions.

Backport of 030dd4f72c from master
[1.7.x] Fixed #22456 -- Replaced 900913 EPSG code by 3857 in some tests

3857 is now the official EPSG code for the Google spherical mercator
projection and some recent versions of GDAL do not recognize 900913
any longer.
Thanks Tim Graham for the report and initial patch.
Backport of c082f3c74c from master.
[1.7.x] Confirmed support for PostGIS 2.1 and GDAL 1.10

Refs #22456.
Backport of 3cea917e3e from master.
[1.7.x] Fixed a KeyError on login with legacy sessions; refs #21649.

Thanks Loic for the report.

Backport of 11e30b684d from master
[1.7.x] Fixed #22444 -- Marked initial SQL/fixture loading as deprecated.

Thanks Karen Tracey for the report.

Backport of a4acb80463 from master
[1.7.x] Fixed #22454 - Changed compatibility warning hint

The warning hint of `_check_test_runner` of 1.6 compatibility had a link
to a general release note. The link should be edited to refer the
relevant "Backwards incompatible changes in 1.6" section that documents
the cause and the possible solutions and workarounds of the warning.

Backport of 214d1e1b0f from master
[1.7.x] Fixed a test failure introduced by 214d1e1b0f.

Backport of 9bc377d7d0 from master
[1.7.x] Fixed #22464 - included contrib/gis/static in tarball

After switching to setuptools in commit 66f546b,
contrib/gis/static isn't included in tarball anymore, this commit adds
that path to be `recursive-include` in `MANIFEST.in`

Backport of bad4721b45 from master
[1.7.x] Fixed #22471 -- Corrected misprint in i18n docs

Backport of 54d5c37de6572eae57a66339bb38719e681cee82 from master.
[1.7.x] Added some missing items to the 1.6.3 release notes.

Backport of c2b269df6e from master