This reverts commit 8ee81314.

Use standard carrierwave gem instead of deleted git repo. This may break photo uploading, but better that than breaking bundle install.

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

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

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