Comment position

Some comments were aligned to the bottom of the main content, some to the bottom of the item container, some appeared above cutouts etc.

Comments are now all aligned to the bottom of items, and sublinks hang off the titles:

![screen shot 2014-10-27 at 18 08 50](https://cloud.githubusercontent.com/assets/867233/4796571/301feb68-5e04-11e4-83c6-98eba9ab0261.png)

http://www.browserstack.com/screenshots/0fab8a58615e6722bca62fe9211f22c38aebaa35