Bug 29406: Improve display of OPAC suppression message

Bug 29406: Improve display of OPAC suppression message

This patch changes the way the "Suppressed in OPAC" message is shown on
the staff interface search results and the bibliographic detail page.
Now the information is displayed like other bibliographic details.

To test, apply the patch and restart services.

- Enable the OpacSuppression system preference and modify at least one
  record to be suppressed in the OPAC (942$n in MARC21).
- Perform a catalog search which will return this record in the staff
  client.
- The entry for that record in the search results should include the
  message "Suppressed in OPAC" at the bottom of the list of other
  bibliographic details.
- View the details for that record. You should see a line labeled "OPAC
  view" It should say "Suppressed in OPAC."
- Test a record which is not suppressed. If you have OPACBaseURL
  populated you should see "OPAC view: Open in new window."

Signed-off-by: Barbara Johnson <barbara.johnson@bedfordtx.gov>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>