EDIT

fix #5927 first implementation for deletion of representations

minor

#5930: disable text fields if no language is selected.

#5908: add a default representation to a term with no representation

if multilanguage text isEmpty translation wizard does not open

#4018 let the right side of the translation wizard empty, fix the save problem for adding a neww representation for terms

#4018 fix NPE

#5908 minor

#5908: fix that the combo box on the left hand side contains only available languages

#4018 add missing RepresentationElement class