1185 Make class classification entities reference bahavior

To be able to load the POSC/CAESAR standard instance libraries, weshould make the class_classification entities subtypes of reference_behavior.

make class_classification entities subtypes of reference_behavior

Class_classification entities have been made subtypes of reference_behavior.

Modified objects:
activity_class_classification (Entity)
equipment_class_classification (Entity)
facility_class_classification (Entity)
document_spec_class_classification (Entity)
material_class_classification (Entity)
well_log_trace_class_classification (Entity)