Add tests for password_reset_confirm URLs.
Add tests for password_reset_confirm URLs.

* This completes covering urls.py.  Because of the Django
  version hackery that is these lines, the coverage
  report misses out line 38 (the version<=1.6 URL) on
  my system.
* The URL tests are a little more complex this time due
  to the addition of keyword arguments to the URLs.

ghickman/incuna-auth,ghickman/incuna-auth,incuna/incuna-auth,incuna/incuna-auth