Fixes displaying the shipping and payment costs if service fee is 0.00
Makes delivery address optional in PayPalExpress payment service provider
Adds process methods and saves params.
Merge pull request #89 from nsendetzky/master

Fixes PayPalExpress provider and displaying shipping/payment costs in checkout process
Merge pull request #90 from doleiynyk/25-02-2013_process_methods_params_to_detail

Adds process methods and given parameters in detail html client
Merge https://github.com/Arcavias/arcavias-core
adapt css style for listview