Add gems in dev and test environments for better debugging.
Add reply functionality to comments on frontend.
Show different placeholder for reply comments.
Add show view for comment.
Link back to commentable on comment show view.
Change votes paths to not use namespacing.
Pass votable type as url dynamic segment.
Add method to iteration to return urlable_type (class for dynamic segment).
Change vote links on home view to correspond to new routes.
Add method to Vote model to find_by_votable.
Add complete votes controller.
Move validation to the model.
Access downvotes and upvotes with scope, instead of where.