[1.5.X] Fixed typo in docs/releases/1.5.txt

Backport of 3bdb2ca560 from master
[1.5.X] Fixed typo in docs/ref/models/querysets.txt

Backport of 76859e6eab from master
[1.5.x] Fixed #18658 -- Improved ModelAdmin.message_user API

Thanks to Lowe Thiderman for the patch and tests
[1.5.X] Fixed typo in django.template.defaulttags

Backport of d179794c6b from master
[1.5.x] Fixed #19331 -- Added missing trailing slash in auth admin template

Thanks ppetrid at yawd.eu for the report.
Backport of 8c21c53c8 from master.
[1.5.x] Corrected docs about default value of MESSAGE_STORAGE

Backport of a32f30c79c1be8e088917bced0f97760a92045ef from master
[1.5.x] Fixed #19331 (again) use the right admin named URL.

This allows us to get the trailing slash in URLs without having to
manually assemble and hard-code them.

See also commits e9497a, a222d6, f51eab, 5a9e12.

Backport of 8fdb28219df22245d7e50b4e8374d8567ca84f0f from master.
[1.5.x] Modified a staticfiles test to use a unicode character that has just one single representation. The previously used character (ş) has two different representations (u'\u015f' and u's\u0327'), which caused spurious failures when the tests were run across multiple platforms (e.g. on a Linux VM hosted on a Mac).
[1.5.x] Fixed #18920 -- Added `.gitattributes` to normalize line endings in HTML templates and avoid spurious failures in the core test suite on Windows. Many thanks to manfre, Claude Paroz, Karen Tracey, MaxV and Daniel Langer for their advising and testing.
[1.5.X] Fixed #19335 - Typo and cleanups in docs/topics/class-based-views/index.txt

Backport of e2b1808196 from master
[1.5.X] Fixed #19243 - Edited GeoDjango Tutorial for consistency and style.

Backport of 8e5573e99a from master
[1.5.x] Added examples of using startproject/app with URLs

thanks to Brent O'Connor for the idea and intial docs
[1.5.X] Fixed #19317 - Added an image for warning blocks in the docs

Thanks tome for the suggestion and patch.

Backport of 3587991ba8 from master
[1.5.X] Clarified usage of as_view kwargs for setting arguments on class based views

Thanks Dave McLain for the patch.

Backport of 7b2d95eb30 from master
[1.5.X] Documented behavior of get_or_create when multiple objects are returned.

Thanks Matt Lauber for the patch.

Backport of 71a3162a70 from master
[1.5.x] Fixed #19316 -- Set View args/kwargs/request before dispatch

Backport of ea6b95db from master.
[1.5.x] Fixed #16039 -- Made post_syncdb handlers multi-db aware.

Also reverted 8fb7a9002669fb7ba7bec7df90b465b92e1ed3c2. Refs #17055.

Backport of a026e48 from master.
[1.5.x] Fixed #18984 -- Avoided a deadlock in test teardown.

Thanks Jeremy Dunck for the report.

Backport of 891c530 from master.
[1.5.X] Fixed #18974 - Warned against using models.permalink

Thanks dstufft for the draft patch.

Backport of 0e3690d230 from master
[1.5.X] Spell checked 1.5 alpha release notes

Backport of e94f8babc2 from master