cleanup
ref #6241 change @date to @since in appimport
fix #6671 remove generics for TaxonName
fix #6368 rename table and class TaxonNameBase in app-import
ref #6286 updates for Flora Hellenica import (including new image import)
ref #6286 FloraHellenica import transactional
ref #6286 latest changes to FloraHellenica import
ref #6286 FloraHellenica import continued