accounting for empty layer list under theme in data catalog
accounting for empty layer list under theme in data catalog

Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH