LP#1053397 icon / metarcord format additions

LP#1053397 icon / metarcord format additions

 * Adds a new blu-ray format for icon and metarecord holds

 * Remove large-print items from the generic "book" attribute for icons
   and holds.

   For icons, this means we will no longer see two icons displayed for a
   single large-print book.

   For holds, this means that to receive a large-print book, one has to
   select the large-print book format.  "book" alone will not result in
   a large-print item being targted.

   Note that when building a data set for the format selector drop-down,
   it might make sense to keep large-print items in the generic "book"
   format.  That'll come later.

Signed-off-by: Bill Erickson <berick@esilibrary.com>