OGM-342 Doc improvements and clean-up
OGM-342 Providing mock client for MongoDB
OGM-342 Introducing object representing a batch insert in order to append additional information such as the write concern to it
OGM-342 Enhancing GridDialect contract to pass additional information to tuple operations and batch operations
OGM-342 Applying write concern given on entity level
OGM-342 Applying write concern setting given on property-level