Adyen Payment 1.2.0

• Implemented Adyen POS (making in-store payments possible)
• Indicate adyen creditcard and oneclick as a payment gateway payement method
• #20 Use our pspReference as transactionId
• #20 Add transaction id to invoice so that online refund is possible
• #19 Use minor amount for partial capture and refund with connection to Adyen
• #18 Allow Adyen_HPP and Adyen_POS to online capture payment
• Added logo for adyen POS and not using a transparent gif to generate the size but just a class with a css width height * definition with a sprite img background
  Uploaded Boku logo
• #17 show the version based on setup_version
• Fixes #16 indicate test and live for web service settings in backend configurations