fix #7149 implementing CollectionEditor
fixing ugly 'null' representation in vaadin TextField
fix #7083 possible to edit preferredStableUri of TypeSpecimens
fixing enabled state of typedesignation fields in SpecimenTypeDesignationWorkingsetEditor
solving multiple representation probelms when adding source references to MediaSpecimen
adding missing URI converter
attempt to fix the enabled state in SpecimenTypeDesignationDTORow - no success
ref #7059 ref #7046 using kindOfunit for TypeDesisgnations instead of DerivationEvent type and fixing save and LIE problems: - intoducing EntityCache to allow re-using previously loaded entities - CdmEntityCache implements EntityCache - ToOneRelatedEntityReloader to replace entities loaded by the LazySelect...
fix #7059 using KindOfUnit instead of DerivationEventType
ref #6724 SpecimenTypeDesignationWorkingsetEditor with Types sub section for contained SpecimenTypeDesignation