remove some old specs
Invert subscriptions controller flow

This inverts the controller flow for subscriptions. The javascript now
will ajax POST the form and expect a json response as produced by
`render_payola_response(subscription_object)`. It will wait for
the subscription to complete processing, then redirect to the path
returned by the plan class's `redirect_path` method.

See `spec/dummy/app/controllers/subscribe_controller.rb` for what this
should look like.

Fixes #49
Merge remote-tracking branch 'origin/master' into invert-subscription-flow

Conflicts:
	app/services/payola/create_subscription.rb
Changed the wrong file
Restore original twostep subscription behavior
More behavior restoration
Move queuing spec into CreateSubscription spec