modify test test_edit_event_with_image to test if the old event picture is getting deleted
modify test test_edit_event_with_image to test if the old event picture is getting deleted

codeeu/coding-events,michelesr/coding-events,joseihf/coding-events,michelesr/coding-events,codeeu/coding-events,ercchy/coding-events,michelesr/coding-events,michelesr/coding-events,codeeu/coding-events,ercchy/coding-events,ercchy/coding-events,joseihf/coding-events,ioana-chiorean/coding-events,ioana-chiorean/coding-events,codeeu/coding-events,joseihf/coding-events,ioana-chiorean/coding-events,ercchy/coding-events,joseihf/coding-events,codeeu/coding-events,ercchy/coding-events,ioana-chiorean/coding-events,michelesr/coding-events,joseihf/coding-events,ioana-chiorean/coding-events