Create comments migration.
Add comment model and corresponding associations.
Add seed comments.
Add empty comment partial view file.
Add existing comments to recipe show page.
Add ability to submit new comment on recipe show page, with redirect to show published comment.
Update commenting to use ajax post- only content appears, not container.

-Owner id not being assigned properly when not logged in - haven't checked when logged in.
Update commenting to show up with ajax, formatted.
- HTML is hardcoded into ajax request - partial should be made and returned.
- Conditional logic to implement default post when js not active to be added.
- Comments are successfully being added to database.
Update commenting to be implemented conditionally via ajax or default post method.
Add TODO to refactor hardcoded new comment html in ajax call.
Add comment_vote model and corresponding associations.
Add commentvote migration.
Implement upvoting with page refresh.
Update recipe comment upvoting to occur via ajax with regular post as backup.