Django has deprecated the use of the old patterns() method, since they now

recommend that all URLs pass in the view directly rather than do string magic

to get the module path. This change moves us over to using plain lists of

url() entries, rather than a bunch of calls to patterns().
While I was doing this, I cleaned things up a bit with the regexes (such as

converting [0-9] to \d and [a-zA-Z0-9_] to \w), and changed it so we

only use raw strings where necessary.

Ran unit tests on Django 1.6 and 1.8.