task/ta-npi-023-09 -- incorporate uncollected query into reminder
process flow

nparcel/reminder.py
* new method get_uncollected_items() which is a generator which returns
  the uncollected job_item.id's
* new method process() which is the high level process flow for the
  reminder process
task/ta-npi-023-10 -- factor out the proxy options from b2cconfig.py
into the base config.py

nparcel/b2cconfig.py
nparcel/config.py
* factored out methods proxy_strings() and proxy_kwargs() from
  b2cconfig.py to config.py