Add chief_comm table.
Add COMM mapping for TariffImporter.
COMM is a relevant record to import now.
Handle possible error case in tariff synchronizer.
Fix ordering on COMM strategy. Add origin column to chief_comm table.
Add NationalMeasurementUnit.
Add GoodsNomenclature to NationalMeasurementUnit association.
Present NationalMeasurementUnits with the declarable.