Merge pull request #515 from PxTools/fix/metadata-language

`CurrentLanguage` instead of the default `Language` in metadata responses

Author: likp

PxWeb/Mappers/DatasetMapper.cs

@@ -329,7 +329,7 @@ private static void AddPxToExtension(PXModel model, DatasetSubclass dataset)
             dataset.AddDescriptiondefault(model.Meta.DescriptionDefault);
             dataset.AddStub(model.Meta.Stub.Select(v => v.Code).ToList());
             dataset.AddHeading(model.Meta.Heading.Select(v => v.Code).ToList());
-            dataset.AddLanguage(model.Meta.Language);
+            dataset.AddLanguage(model.Meta.CurrentLanguage);
             dataset.AddOfficialStatistics(model.Meta.OfficialStatistics);
             dataset.AddCopyright(model.Meta.Copyright);
             dataset.AddMatrix(model.Meta.Matrix);