EDIT

ref #8774: do not allow duplicates in term tree editors if voc does not allow

ref #9266: remove protologue section - needs to be cleaned up

ref #8774: fix save of newly created character nodes

ref #8774: fix refresh after remove featurenode

ref #8774: fix drag & drop in character editor

ref #8774: smaller changes in character editor or correct right click menu usage

ref #8774: fix term combo for dto selection

revert changes

ref #8774: adapt term tree editors to dto usage

catch widget is disposed