ref bug #9199: Adapt TaxEditor to switch to originalSource for remaining single sourced objects, ref #6581, #9194 adapt TaxEditor to ReferencedEntityBase removal (has open issues)
ref #9116: layout issues and improve handling if no source exist
ref #9116: layout issues and missing fields
ref #9116: add single source element to taxon node details and restructure the wizard
ref #9116: add new classes for single sources