Bug 24530: Show a number for title notes on opac-detail

Bug 24530: Show a number for title notes on opac-detail

A number (just as on most other tabs) tells more than a boolean (i.e. the
tab does not appear for zero marc notes). Intuitively, you might be misled
by "Holdings (1), Descriptions" and think there are none.

Test plan:
Verify that the number of title notes on opac detail page matches your
expectations.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>