Fix conditions for showing presence and payment on the event page
Closes no issue (issue reported in the Thalia Whatsapp)
Previous behaviour
Steps to reproduce:
- Create an event which requires registration.
- Register and unregister for the event.
- It still shows the payment status and presence.
New behaviour
Steps to validate that it works:
- Create an event which requires registration.
- Register and unregister for the event.
- It no longer shows the payment status and presence.