Refactor import listings function
Refactor import listings function

OpenBazaar/openbazaar-go,gubatron/openbazaar-go,hoffmabc/openbazaar-go,gubatron/openbazaar-go,hoffmabc/openbazaar-go,gubatron/openbazaar-go,OpenBazaar/openbazaar-go,OpenBazaar/openbazaar-go,hoffmabc/openbazaar-go