revert py steward manager back to subclass base manager.
revert py steward manager back to subclass base manager.

v1 compat mode doesn't apply in this case.

dartajax/ilios,stopfstedt/ilios,dartajax/ilios,Trott/ilios,thecoolestguy/ilios,stopfstedt/ilios,ilios/ilios,ilios/ilios,thecoolestguy/ilios,Trott/ilios