Need a way to generate slugs for media entries, etc
We need to be able to generate URL slugs for media entries.
I'd really like to use
but have to clear it with the FSF that that public domain assertion
is okay for our codebase and to merge.
Regardless, we need to generate slugs for each entry anyway.
Probably during the submission phase after setting the title there
should be an entry.generate\_slug() method which sets the slug on
the MediaEntry instance.
This way we have a nice way of accessing for example the fictional
[http://mediagoblin.example.org/\ :sub:`cwebber/w/a-walk-in-the-park/](http://mediagoblin.example.org/`\ cwebber/w/a-walk-in-the-park/)
that last bit of the URL being the entry slug.