Specs may fail on repeated runs unless you grab this commit

[Armando Fox]

git cherry-pick c1cdfa0

I changed the validations for Condition and Learner to require them to have unique names (at least for now, since we don't have a notion of Conditions being "owned" by any particular instructor)

This requires changes to the FactoryGirl factories to give sequence-numbered names to guarantee uniqueness. The above commit does this for you