Resolve "No replica set members found yet" errors when using mongodb …

Clarify the intent of both 'j' and 'connect' options of pymongo.MongoClient().

closes #123

Resolve "No replica set members found yet" errors when using mongodb connections when API is hosted by API.

add bids download to master

- add two new variables to sample.config
- update defaults in config.py to be strings as that's how environment
  variables come in by default

Convert cron jobs to endpoints and remove unprocessed flag

closes #93

closes #100

Allow rule hierarchy walking on more container types

move file before db updates in container uploads

closes #115

import jobs module for later use by job_creation(). 

Better support mongo replicas and variable retry params

Overhaul config system

Testing infra updates