We need a task that would clean up:
- Old object errors
- operationExecution in shadows
- Tasks that are already closed and do not have a schedule and stay around just to hold the result.
This may be an improvement over existing cleanup/refresh task. Or a new task.
Susupicion: there may be also problem with cleaning up data during normal operations. E.g. manual connectors may not be cleaning up operationExecutions properly. We probably need to unify the cleanup code that is running as part of the normal operation and the code that runs in cleanup task.