multi-line value editor in advanced preferences and copy-paste

[alv]

At least one advanced preference tag (relation.nameOrder=*) requires values to be on "separate lines" (in code, the default value looks like an array).

Problem is, that if you start editing any of the value lines on the keyboard by just typing something, you can't use ctrl+v to paste a value (you would often want to include the hardcoded default values from the source code, if you are editing an array of values).

OTOH, if you start editing each row with F2, you can paste. Same happens if you double-click a row to edit.