Implemented copyWithZone, hash and isEqual for OLProductPrintJob
Implemented copyWithZone, hash and isEqual in OLPostcardPrintJob
Removed NSLogs...
Changed how postcards are shown at checkout.
Added Continue Shopping in the default checkout.
Changed color of button.
Changed delegate references to weak.
Merge pull request #3 from kkarayannis/master

Continue Shopping and other improvements.