Upgraded mongo-java-driver to 2.12.2
Added an ObjectId extractor to lift-mongo.
Added MongoRecord extractor to lift-mongodb-record
Added RecordRules.displayName.
Added MongoRules.collectionName
Documented the types that MongoListField supports.
Fix setFromJValue on MongoListField
Make AsObjectId.asObjectId public
Use StringHelpers.charSplit in MongoRules.
Added mongodb.JsonExtractors for DBObject <-> JValue conversions.
Merge pull request #1566 from lift/tcn_mongo_stuff

Mongo enhancements