- deactivate util_createDom and friends due to problems in containers, loosing properties and the unability to re-enable disabled fields (maybe browser caching) - formfield "file": simplify value management - formfield "file": keep always revision_ids as linkage when going back in revisions (the revisions of the form page do not neccessarily correspond 1:1 to the revisions of the contained file object) - formfield "CompoundField": update property in instances_attributes after convert_to_internal