Hide option to "Open in" an element in the same part
ref #6925 Open specimen editor in editor area
ref #6598 Migrate "Open in.." handlers
ref #6598 migrate/remove open handlers
ref #6909, #6598 migrate default open handlers
ref #6925 correctly acces EPartService
ref #6566 Fix open handler for specimen editor
ref #6566 Migrate "Open in" context menu for specimen editor
ref #5923 Add "Open in Specimen Editor" for bulk specimen editor