Moves comments form into a partial.
Nests the comments resources under the cops resources.
Starts spec for ajaxifying the comments form. Locks database_cleaner to v. 1.1.0 because the current version was trying to use postgres instead of sqlite. Sets the random spec order to false so that the adding a comment with js test doesn't interfere with the rest of the context while I'm working on it.
Ajaxifies displaying the form for a new comment.
Axajifies adding a comment to the comments list. The create action of the comments controller needs to be tidied up.