Modified find operations to ignore the internal _id field for returning results for searches and GET (read, vread) requests.  Also removed _id from copying to history so it can be created by mongo.
Modified find operations to ignore the internal _id field for returning results for searches and GET (read, vread) requests.  Also removed _id from copying to history so it can be created by mongo.

openhie/emNutt,openhie/emNutt