removed unique index on email to a regular index in order to make inviting users through fb work (no email present)

This much untested code makes me sad. But I fixed the bug whereby no rake tasks worked because of the require line.

Fix 1.8 build by rolling back aws gem. Fix 1.9 build by rolling back mongo_mapper to a previous ref. Prevent this from happening (as much) in the future by locking down versions in the Gemfile.

updated rails, and incorrect respond_to :location calls.  you must supply an object with respond_with

Updated versions of carrierwave, aws, cucumber, culerity, gherkin, haml, mail, rspec, rspec-core, rspec-expectations, rspec-mocks, and rspec-rails. What could possibly go wrong?

Using a single type of url means just a single type of problems ;)

This reverts commit 30698d67.