I am using an htmx-infused button to remove the payment, but that
button can not have the CSRF token as value, thus i have to send it in a
header.
The removal of payments warrants a functions, instead of just DELETE
(and CASCADE) as i do for payment methods, because i have to adjust the
status of expenses too. Since i already have functions for everything,
it is not worth using triggers just for that.
