New: Promote payment plans

When adding payment plans you are now able to set a promo flag:

Promoted payment plan

Promoted payment plan


This payment plan is only visible for clients coming to your site via a special promo link. You can use this link e.g. in emails:
The client has to enter the promotion code

The client has to enter the promotion code

This is a feature request by der-schwarze-dorn.com and sadistenzirkel.com.