Added Discrete class persistance.
Added Terminal Persistence.
Added ConformLoad persistence.
Added Analog, AnalogLimit and AnalogLimiSet persistence.
Added Disconnector persistence.
Added TransformerWinding persistence.
Added BusbarSection persistence.
Added ConnectivityNode persistence.
Adding missing rdf datatype classes and updated persistence xml and main.
IdentifiedObject is now a super class for the different elements.
Substation and Voltage are working in tandum with parent/child relationships.
Modified substation and voltagelevel for the new model heirarchy.
Added NodeBreakerDataType interface to be used for all of the different
datatypes that are in the node breaker cim model.
Fixed inheritance so that all of the nodebreaker items are inheriting
from IdentifiedObject and extend NodeBreakerDataType.
Added dataType and NodeBreakerDataType interface to all of the models.
Simplified NodeBreakerDao because all of the different objects support the NodeBreakerType interface.
Added back-reference to substation from voltagelevel.
Fixed up items so they are saving properly in cassandra.  Now to
replicate and finish.
Fixed up items so that they save properly.  Now on to replicate and finish up.
Fixed up items so that they save properly.  Now on to replicate and finish up.