Add a course improvements

This is mutually exclusive with #206 We must decide between them

When auto-complete selection window shows up, it doesn't refresh or go away, if you keep typing.
- On ajax query fail, dismiss dropdown box (bc the entries are no longer correct)
The SAVE button is available but doesn't do anything until you choose a course
- ¿Only show the SAVE button once a course has been selected?
- ¿Show list like on add note my courses dropdown?
Autocomplete field is not labeled such that you understand that you can type to search
- ¿Label it autocomplete or "search for your course"?
If you type something, and the list doesn't contain what you want, but is not empty, it is not clear how to create a new course.
- ¿Always show "can't find your course, create a new one now"?
Autocomplete select list is not styled like the rest of the site and is too big
- ¿Instead use style like in the upload modal system?
On success, the font styling showing you your course is far too large

FinalsClub / djKarma