Added rdl file for prod classes

+# baseURI: http://www.reportinghub.no/refdata/RDL_ProductionClasses
+# imports: http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003
+# imports: http://www.reportinghub.no/refdata/RDL_ERHFoundationRD
+
+@prefix :        <http://www.reportinghub.no/refdata/RDL_ProductionClasses#> .
+@prefix RDL_ERHFoundationRD:  <http://www.reportinghub.no/refdata/RDL_ERHFoundationRD#> .
+@prefix owl:     <http://www.w3.org/2002/07/owl#> .
+@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd:     <http://www.w3.org/2001/XMLSchema#> .
+
+<http://www.reportinghub.no/refdata/RDL_ProductionClasses>
+      rdf:type owl:Ontology ;
+      owl:imports <http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003> , <http://www.reportinghub.no/refdata/RDL_ERHFoundationRD> ;
+      owl:versionInfo "Created with TopBraid Composer"^^xsd:string .