Allows shop owners to automatically generate either free (local) UPC barcodes or premium (GS1, or equivalent) barcodes when adding products.

Features include:
* Ability to generate a unique free barcode.
* Ability to generate unique premium barcodes, with varying prefixes.
* Ability to search/sort by barcode on product lists.

ALSO INCLUDES:
* VQMod to display barcodes on product pages on default theme.
When purchasing this extension, you are entitled to have the VQMod modified *once* within 10 days of purchasing, to fit your current customer facing theme and display the barcode correctly.