Patron evaluation not working properly

[Nando Neck]

primary and secondary patron cannot be of the same patron group

example: Ferkina-Besessene (Khoramswühler + Löwe) shows no error, but it should show, that the secondary one is from the same group as tiergeister

also it would be great if only valid patrons are shown in the warning list

[Nando Neck]

partly solved
a limitiation of the available patrons would be comfortable