__init__.py:
- moved _cypherQuery into RQ
- now handling PartStaff like Part
- added handling for Roman numeral data

musicNetServer.py:
- switched from Bottle to Flask microframework
- moved GeneratePreviews to its own class
- switched data queue to GeneratePreviews from multiprocessing.Queue to
a Redis queue

previews.py:added
Small/debug edits.