adding selected elements to an ordered relation

[Landwirt]

I tried to sort and add elements to a relation and came to the problem/annoyance that it seems not to be possible to add new elements to the end of the list. They are always inserted before the last element in the list, making it complicate to create ordered relations.

I'm not sure if it's a defect or an enhancement request as the source comment says "when working with ordered relations, we make an effort to add the element before the first selected member." At least add a preference to change that behavior.

[Gubaer]

fixed in r1790