stub specs for moving purchase-observer behaviour to controller
bump rspec
Remove most of PurchaseObserver

`confirm`, `pay` and `cancel` logic is now moved to controller.
Bye bye PurchaseObserver

* `purchase_created` emails are now sent from PurchasesController#create
* vouchers are now pushed to Mage from PurchaseController#keep
* PurchaseObserver is now gone.
updated schema.rb without debts table
removed no-peeping-toms
Merge pull request #125 from datasektionen/no-more-purchase-observer

No more purchase observer