task/ta-npi-023-13 -- merge config items back into b2cconfig.py

nparcel/b2cconfig.py
nparcel/conf/nparceld.conf
* add notification_delay, start_date and hold_period support

nparcel/reminder.py
* updated the __init__() method signature: removed the config_file
  argument.  Added notification_delay, start_date and hold_period
* deprecated the parse_config() method as it's now handled in
  b2cconfig.py