task/ta-npe-mapper-10 -- nparcel.MapperDaemon archiving facility

nparcel/b2cconfig.py
* new attribute "pe_in_file_archive_string" regular expression grouping
  structure for Primary Elect inbound filenames that represent the
  YYYYMMDD date sequence
* new attribute "customer" which is the upstream provider of the GIS
  T1250 files

nparcel/conf/nparceld.conf
* support for the new file_archive_string and customer Primary Elect
  options

nparcel/mapperdaemon.py
* new method get_customer_archive() which returns the archive target
  path based on given GIS T1250 filename
* updated the get_files() method to be aware of archived files