Fix undefined method where for Array error in migration.
Correct coffee-rails and sass-rails dependencies for this branch
Add attr_accessible to StripeGateway for keys
Revert Stripe.js features

These were proving too difficult to add to this branch. And besides, the release policy is no new features on old stable branches, so it shouldn't have been here in the first place.

This reverts a whole bunch of commits:

6197783 Add attr_accessible to StripeGateway for keys
543080d Correct coffee-rails and sass-rails dependencies for this branch
6a66c59 Need to wait for Stripe to return results
3f74aaf Fix undefined method where for Array error in migration.
3462f95 [stripe] it's called 'secret_key' now, not 'login'
942a7b0 Add support for Stripe.js