Bug 13734: RDA: Display 33xs

Bug 13734: RDA: Display 33xs

    Test Plan:
    1) Apply this patch
    2) Ensure you are using the default XSLT setting for the staff and opac search results and record details
    3) Find or create a record with MARC tags 336,337,338
    4) Perform an opac search that would show the record in the search results.
    5) Click title to review record.
    6) Adds fields 336, 337 and 338 to staff and opac details. Adds comma between multiple subfields and | with class='separator' between multiple datafields (e.g. two 336 fields)
    7) Repeat steps 4 - 6 for the staff interface

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Works, no errors

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>