Did some testing for Ogone DirectLink API.
Adjusted some test info.
Added Via CARDNO.
Added Ogone DirectLink class.
Merge branch 'develop' into feature/OgoneDirectLink
WordPress Coding Standards optimizations.
Added fields sections.
Updated Dutch translations.
WordPress Coding Standards optimizations.
Added some missing spacing.
Added an get_inputs() function for the update select fields functionality.
Added an extra fields array to map gateway field to Gravity Forms fields.
Added missing ;
Added fields for feed function.
Enable the Gravity Forms creditcard field.
Added an Ogone security utility class.
Moved the parameters class to the Ogone namespace.
Renamed Internetkassa section to Ogone, added two new Ogone config fields.
Added Ogone DirectLink gateway and client classes.
Updated Dutch translation files.