docs.djangoproject.com displaying wrong docs for 1.4

[Russell Keith-Magee]

Reported by Greg Nicholas via mailing list:

docs.djangoproject.com is currently displaying the dev documentation on the 1.4 branch. A telltale sign -- the deprecation status of the url tag:

​https://docs.djangoproject.com/en/1.4/ref/templates/builtins/#url

In 1.4, the "future compatibility" warning and old, non-quoted syntax should still be in place.

I'm guessing this is an artefact of the switch to Github, and the changes needed on docs.djangoproject.com to auto generate the docs.

[Claude Paroz]

Duplicate of #18262