tornevalls-resurs-bank-payment-gateway-for-woocommerce

Pull request #17: RWC-59

Merge in WWW/tornevall-networks-resurs-bank-payment-gateway-for-woocommerce from RWC-59 to master

* commit '6ebbf6193ae0068282778d3684e9aaf7ff84440b':
  store_api_history option added and language patched.
  Introducing protected metadata. When checking orders and payments from ecomphp are fetched successfully, credentials are saved to the protected metadata in the order. Added method to check if credentials are matching with current saved data. Added method to push more meta data into orders. Added method to simpler add options for plugin. isCurrentCredentials pushed out to layout. Added logging. Fixed failover problem for getPayment.