This fixes a couple items with the MongoDB store that make it compatible with the latest version of the Node MongoDB Native driver as well as handle a couple of argument validation issues. It also includes some of the other patches that I have previously submitted in previous pull requests.
fixing ordering of Peristent store init to ensure store is available …
fix undefined arguments code logic
update mongodb package location, deal with empty query, add default p…
…ort and write notification
add direct access to collection for MongoDB