Add support for urls with no prefix (www/http(s)) and chars after the TLD to django.utils.html urlize.

[LarryBrid]

Currently the urlize template tag will convert the following text into clickable links:

www.google.com/foo
​http://google.com/foo
google.com

It will not convert the following into a clickable link:

google.com/foo

The current regex that handles this operation can be found ​here.

This patch proposes matching all chars after the TLD so that google.com/foo will be converted.

The urlize function handles the removal of cruft from the end of urls prior to running that regex, so the matching of all chars after the TLD shouldn't run the risk of including any unintended chars.

All tests are passing using sql lite, and it should be backward compatible as it doesn't really change anything except for what it is matching. It shouldn't require a documentation change, because it seems like this was the intended behavior according to the current documentation.

[LarryBrid]

​This branch modifies the regex from its current form to ...net|org)(.*)$' in order to match chars after the closing TLD.

[Tim Graham <timograham@…>]

In a93ee5112d42d37187e30aa4edcc1864a79d384a:

Fixed #22941 - Added support for domain-only links with chars after the TLD to urlize.

It now works with something like google.com/foo/bar

[Claude Paroz <claude@…>]

In 1bb1d3168b813e050df757ff40cdaf2feab45fdb:

Updated urlize regex following a93ee5112d4

Prevent urlize from turning some.organization, an.intern etc.
into urls. Refs #22941.