Add EANs for major brands as global barcodes

[armahillo]

Sean made a contact at the conference who said they can get us EANs (barcodes) for all the major diaper brands. Huggies has said they'll provide us with all of their EANs.

We're going to add these to the global BarcodeItem seeds, and deploy those to production. Diaperbanks should be able to add their own localized BarcodeItems that will supersede these, but these will at least work by default.

[seanmarcia]

Next time we meet with the folks at NDBN let's ask them if they can talk to the various manufacturers they work if they can get this for us.