defect/de-33 -- compliance report needs to restrict agent compliance
only if they have an aged parcel present

nparcel/auditer.py
* update the _cleanse() method to strip off the decimal seconds

nparcel/report/compliance.py
* updated the process() method to include the new compliance report
  query (jobitem.agent_id_of_aged_parcels()) and pass through the
  _cleanse() method

nparcel/table/jobitem.py
* new method agent_id_of_aged_parcels() to provide a distinct list of
  agents that have an aged parcel