Backbone version of the course outline page

STUD-1726

Converted the course outline page to Backbone so as to support dynamic client-side updating.
We need URLs in both the course outline and the unit outline. We could try to compute them on the client-side, but then we have duplicated the logic as we also need to compute them server side. It seems like relevant metadata to me, but I'm open to a different approach if you have one.