The SEPA-Verfahren is implicitly agreed to during the donation process, but we probably still have to give the possibility to view the mandate. Thankfully, there is a stub for that already.
- print link (Javascript) is shown instead of the link stub
- For direct-debit payments "Diese Bestätigung (inklusive SEPA-Mandat) ausdrucken"
- For all other payment types "Diese Bestätigung ausdrucken"
- mandate text is not shown on screen (hidden)
- mandate text is shown in print above newsletter opt-in.
Solve together with T180124, maybe.