@singingwolfboy we should think of changing the `/indexes` response to a superset of these.
@chrisndodge 
* What's the purpose of `display_coursenum` given `display_name`? How do these differ?
* `start` should be an ISO date
* We should move `display_org` to some other data structure at some point so that the org can control this and not have it vary course to course. I'm not sure who should make this change.