EDIT

move ChangeConceptToSynonym business logic from editor operation to service layer

move the change accepted to Synonym Operation to taxon navigator.

• adapted sub classes of AbstractPostOperation

• extracted super class from AbstractPostOperation (same name)
  • created sub class AbstractPost Taxon/Describable Operation

fix deleteAllEmptyNames

smaller fixes

fixing #3793 (do not allow to turn an accepted taxon into a synonym as long the accepted taxon still has children)

fix the error caused by the delete functionality in the service layer

merged model adaptions to cdmlib 3.2.4 from campanula branch