task/ta-npi-017-10 -- integrate file extension based file move to exporter

nparcel/exporter.py
* process() method signature update to include an "archive_dir" and
  "file_control" argument
* process() method refactored to support archive_dir move and
  file_control processing without affecting existing behavior
task/ta-npi-017-11 -- extend ifle extension based control to Ipec
processing

nparcel/table/jobitem.py
* updated collected_sql() SQL wrapper "AGENT" column header to "AGENT_ID"

nparcel/tests/test_exporter_ipec.py
* all mods were verified in the test file -- no changes to exporter
  logic woohoo!!!
task/ta-npi-017-12 -- translate config flags to proper file_control
construct and feed into exporter

nparcel/config.py
* new method get_file_control() which returns the business unit file
  control settings from the condition map values
* new method bu_to_file() returns the file_bu configuration option of a
  given business unit.  For example 'priority' = 'toll'

nparcel/exporter.py
* new attribute "archive_dir" to store redundant signature files.
  Previously was an argument to the move_signature_file() method
* move_signature_file() method signature now includes file_control
  construct

nparcel/exporterdaemon.py
* update to the _start() method so that call to the Exporter() class
  incorporates an "archive_dir"