LP1559281: Allow Baker and Taylor Fake ISBNs

LP1559281: Allow Baker and Taylor Fake ISBNs

For Content Cafe, jam two B&T entrys into the hash so that Business::ISBN
doesn't register them as invalid prefix ISBNs.

B&T uses internal ISBN's with country codes 630 and 631 for materials
ordered through them when no assigned ISBN exists.  The ContentCafe
added content service knows about these ISBNs, but they are not generally
used by other providers.

To Test:  This only works if you are using the ContentCafe added content provider.

 - Before Patch -
1. Add the isbn 9786315820243 as the only isbn on a record. Remove UPCs also..
2. Clear the added content cache by restarting memcached or using the staff link.
3. View record in catalog and you should see no cover art.

 - After Patch -
1. Clear the added content cache.
2. View the record in the catalog and you should now see cover art for the title
"Video games: the movie"

Signed-off-by: Thomas Berezansky <tsbere@mvlc.org>
Signed-off-by: Josh Stompro <stomproj@larl.org>