TPAC: Alternate graphic fields (880) display

TPAC: Alternate graphic fields (880) display

In the search results and record details displays, display the
corresponding 880 field(s) whenever possible.

The contents of the 880 field are generally displayed directly
underneath the corresponding primary field, with the exception of the
contributor credits on the record details page, in which the 880
contents appear between the name of the contributor and the
contributor's credit.

Signed-off-by: Dan Scott <dan@coffeecode.net>