Is there an easy way, using the SS API and ModelAdmin, to give the user the possibility to edit the ordering of the objects through an 'ordering' field or something like that, or is this something that has to be implemented by yourself?
DataObjectManager has drag-and-drop sorting built in. Have you tried that?
Well sorry I put a question for ModelAdmin into the DataObjectManager forum :-O
But while lokking at the DataObjectManager documentation I came across the SortableDataObject class which should help me I think!