##Comments
The features of the comment system follow.
- New comments are sent by email (with full body) to the article's author
- Reply to comments are sent by email to user who originally commented
- Organized by types
- Threaded replies, one level deep
- Author level control to change types
- Types are fixed within the system
- current types: null, bugs, question, off-topic, closed
- tabs for each type displayed in the order listed above
- only comment titles are visible, must expand to see comment body
- replies to comments are not displayed when the comment is expanded.
- must click "view replies" to expand the thread.
####more on types:
- will utilize property $types in Comment model
- overriding $types with ```Configure::write('Comment.types')``` in bootstrap.php
- Comment::types() will provide the accessor
