JS: Copy over selection when adding new VN or producer relation
JS: Copy over selection when adding new VN or producer relation

Small but annoying bug...

erengy/vndb,erengy/vndb,christian-roggia/vndb,morkt/vndb,morkt/vndb,christian-roggia/vndb,morkt/vndb,christian-roggia/vndb,erengy/vndb,morkt/vndb,morkt/vndb