Still need to add UI for the blog index, and fix some aesthetic issues:
- Wide posts can break the editor UI
- Blog comments don't show the fancy reply UI
- The post hash stuff on blog threads doesn't jump you to the correct
post
Probably other stuff, I dunno.
Threads can stand alone now. Threads can be attached to resources
directly without requiring a category. In addition, a lot of wiki stuff
and library discussion stuff was deleted because we're not gonna port
it.