Migrate from `url()` to `path()`

This PR migrates from the Django 1.x url() style routes to Django 2.x style path() routes.

NOTE: There is a TODO in here because there was a URL with a hard-coded date string. I expect that was added during testing for a new feature/enhancement, because it doesn't seem like the view even takes a second parameter yet.

Please review: @NUWAN.KUMARASIRI @TREFILEK @bjsousa