Bug 6314 XSL UNIMARC Improvments

Bug 6314 XSL UNIMARC Improvments

- Exclude 'marc' & 'item' prefix from UNIMARC util XSL to slim down
  result
- Add missing NSB/NSE characters striping
- 200 fields on result/detail page: show all subfields in order, link to
  detail page only on $a
- 4xx display, more fields and more subfields, respects subfields order
  which matter
- Improve RAMEAU authorities linkings to subdivisions (pure XSLT)
- Add missing fields: 205, 500
- Add missing MARC21 syspref:
  - DisplayOPACiconsXSLT, not implemtable in UNIMARC
  - OPACURLOpenInNewWindow
  - URLLinkText
  - ShowISBD
  Sidenote: this should have been done by people having introduced those
  syspref into MARC21 XSL.

Suite

http://bugs.koha-community.org/show_bug.cgi?id=6314
Signed-off-by: Alex Arnaud <alex.arnaud@biblibre.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
(cherry picked from commit fd84f8c2bcdc01fc753c6b281f13e387586199cc)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>