- Remove usage of django.urls.patterns
- Change urls tuples to lists
- Make all string view names callables
- This is the second of several urls updates for LMS; a work in progress

Also add it to the course home page.

through to the REST API:

* created_date: date/time the certificate was issued.
* is_passing: boolean flag denoting whether the certificate status is
  passing or non-passing.

And adds JwtAuthentication, so the Certificates REST API can be easily
accessed from Enterprise management commands.