Update to Rails 4
Update to newest Rails.
I'm keeping Fabrication locked to the older version so that we
don't have to worry about it.
I had to change spec/requests to spec/features because that's
what RSpec wants nowadays.
Debugging Rails 3.2 auto-explain issue
Setup to use 3.2 automatic EXPLAIN
Bumping up to Rails 3.2
Better database cleaning during tests with Database Cleaner
Improving testing setup