Removed code to handle cases where the unset carrier_label was by default set to 0.  This means that the database must be updated to replace all 0s with just an empty string.
The boxloading page javascript now checks for the correct leading digits in each box code field and on finding an invalid barcode presents an alert that states that, preventing the user from entering any new barcodes until the barcode in question is validated.
Added code to play a Wookie roar when a book barcode that does not begin with 32260 is detected.