mappings/VegCSV-VegBIEN.specimens.csv: decimalLatitude/decimalLongitude: Added _nullIf suffix for mergability with VegCSV-VegBIEN.specimens.csv
mappings/VegCSV-VegBIEN.specimens.csv: decimalLatitude/decimalLongitude: Added _nullIf suffix for mergability with VegCSV-VegBIEN.specimens.csv