SEPA Export webui friendly process

[teosarca]

Is this a bug or feature request?

Bug

What is the current behavior?

Which are the steps to reproduce?

1. go to payment selections https://w101.metasfresh.com:8443/window/206/1000000
2. select actions - sepa export =>

Remark: you have a parameter to select which is the file you want to save => while this is OK/normal in Swing, for webui things does not work like this

What is the expected or desired behavior?

• no file parameter
• when you click start, the process will send back the file which shall be downloaded by frontend (same as we do with the reports)

[teosarca]

also, see https://github.com/metasfresh/metasfresh-webui-frontend/issues/1778#issuecomment-394602071