Add title image with RadioProgram and RadioReport
- add image to RadioProgramm (series), also to Broadcast? (to allow image for a special issue ('Sondersendung')?)
- add image to RadioReport (such as picture taken afterwards in the studio with guests, or report cateegory image, such as "Gut Zu Wissen", "Hör Mal Rostock", "LOHROtation")
probably encapsulating images in a own model / using plug-in such as