task/ta-npe-002-18 -- adjust nparcel/comms.py to handle action-based
comms files

nparcel/comms.py
* updated the parse_comm_filename() method to handle and return
  communication
  action type ("sms" or "email")
* process() method now selectively send comms based on action
* process() method now removes comms files upon successful transfer and
  moves aside comms files that fail processing