Add post class to sections in Proposals index.
Show vote counts. Add identifiers for Proposal and Course on front page.
Add voting.
Change the look of the Proposal/Course on the front page.
Correct has user voted method. Change some markup.
Remove new course link from course index.
Add minimum and maximum class size to course model.
Add proposal reference to course.
Create route for courses. Correct relationship between courses and proposals.
Correct misspelling of parameter.
Add voting functionality to courses.
Fix new course path and add course list for proposal.
Fix merge conflict.