showing other indicators of course quality #82

refer to any writing seminar. e.g. https://dev.princetoncourses.com/course/1174008763?search=wri&semester=1174&sort=relevance

the search pane / past semesters entries have 'n/a' on the badge, but for each semester the feedback fields 'Techniques & Strategies' and 'Quality of Experience' are available. It would be nice to have these displayed.

Maybe the '/api/search/' and '/api/course/' (for semesters) endpoints can return a score and a score descriptor: e.g. the returned course object has course.score = 4.30, course.field = "Overall Quality of the Course". Alternatively all evaluations can be returned and the displaying can be handled on the front end.