Bug 8946: corrections in inc files for UNIMARC coded fields advanced search

Bug 8946: corrections in inc files for UNIMARC coded fields advanced search

In subtypes_unimarc.inc files for opac and staff interface, this patch
- fix 1 wrong code (Frequency-code:i = Other should be z)
- fix the label "Feschrift Ind." to "Literary genre"
- add some values for Material-type index (s, t), Literature-Code (i), ctype (v, w), Type-Of-Serial (e,f,g)
- fix a few typos
- change the order of some values (u values)

To test, check if the new values are visible in the opac and staff interface.

Signed-off-by: Mason James <mtj@kohaaloha.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>