defect/de-19 -- filterdaemon.py failing when writing out to more
than one output file

nparcel/filterdaemon.py
* updated the close() method so that it removes the reference to the
  file handle once the file is closed
task/ta-npp-003-15 -- integrate POD files and remote deletions

nparcel/ftp.py
* updated the process()method to distinguish between inbound
  and outbound transfers
* updated the inbound() method to support "partial" downloads
  and delete on transfer
* updated the inbound() method to conditionally download POD
  files for associated report files