consolidate and/or cross reference documentation on {% load %} template tag

[Tobias McNulty]

The {% load %} template tag is documented in at least 3 places, and 2 of them do not mention the {% load foo from bar %} syntax that was introduced in 1.3. This documentation can probably be consolidated (and/or spruced up with cross links) to make the from syntax easier to find.

The 3 locations are:

​https://docs.djangoproject.com/en/dev/topics/templates/#custom-tag-and-filter-libraries

​https://docs.djangoproject.com/en/dev/howto/custom-template-tags/#code-layout

​https://docs.djangoproject.com/en/dev/ref/templates/builtins/#load

[Gabriel Hurley]

Agreed on the linking. I don't think any de-duplication is necessary since they're all discussing different topics. For the three docs as listed:

1. In the sentence "In the above, the load tag loads the comments tag library, which then makes the comment_form tag" all of those code bits should be cross-refs.

2. The howto can include a cross-ref "for more information on load..." in the "behind the scenes" box below.

3. This is the appropriate canonical place for a full reference and should be linked to from anywhere else.

That should take care of it.

[Alex Gaynor]

In [16774]:

Fixed #16793. Added more cross referencing to the load tag's documentation. Thanks to bluejeansummer for the patch.