Comments on discuss page have active reply links.
Reply links for unauthenticated users go to login page.
Minor styling fix for comments for unauthenticated users.
Reply page shows article information, and comment you are replying to.
Reply form is active, and seems to work. Discuss does not display nested comments yet.
Reply form saves comment with proper parent data.
Cleaned up reply page.
Total comment count is accurate for article, counting nested comments.