Bug 12692 - Markup improvements to holds awaiting pickup report

Bug 12692 - Markup improvements to holds awaiting pickup report

This patch makes some minor updates to the output of the holds awaiting
pickup report. To test you should have several holds which are marked as
"waiting," including some which have been waiting longer than the number
of days specified in the ReservesMaxPickUpDelay system preference.

- Go to Circulation -> Holds awaiting pickup
- In both the "waiting" and "over" tabs, confirm that titles display any
  associated subtitle
- Confirm that library name is shown instead of library code
- Confirm that the patron name mailto: link works correctly

Signed-off-by: Frederic Demians <f.demians@tamil.fr>
Works as described: subtitle displayes (if mapping defined), library name
instead of code, and email as clickable mailto.

Remark 1: As for bug 13083, subtitle display is not as good in UNIMARC than in
MARC21, since subtitle is not separated from title by ':'.

Remark 2: 'subtitle' field is retrieved from a field mapping. Taking a look at
C4::Biblio::GetRecordValue, one see that the fieldmapping is directly queried.
There isn't any caching system, like for frameworks.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described and passes tests and QA script.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>