Update README with build status; remove stale info
Set up seed data

While trying out the seed data, I noticed some CSS booboos, and I fixed
them.

I also got rid of the annotate gem and got rid of the annotate comments
in some of the models. That was just annoying.
Merge branch 'master' into subdomains

* master:
  Set up seed data
  Update README with build status; remove stale info