Bug 34677: Update to MARC21 relator terms list (May 31, 2013 technical notice)

Bug 34677: Update to MARC21 relator terms list (May 31, 2013 technical notice)

This patch adds missing relator codes/terms to the marc21_relatorterms.yaml file in accordance with the May 31, 2013 technical notice.

https://www.loc.gov/marc/relators/tn130531rel.html

To test:
1. Apply patch and restart
2. Go to Administration > Authorized values > RELTERMS
   --> New terms should be there and deprecated terms should have been removed

Additions:
abr - Abridger
apl - Appellant
ape - Appellee
adi - Art director
ato - Autographer
brl - Braille embosser
brd - Broadcaster
cas - Caster
cor - Collection registrar
cou - Court-governed
crt - Court reporter
edc - Editor of compilation
edm - Editor of moving image work
enj - Enacting jurisdiction
fds - Film distributor
fmk - Filmmaker
fmd - Film director
fmp - Film producer
his - Host institution
isb - Issuing body
jud - Judge
jug - Jurisdiction governed
osp - On-screen presenter
pan - Panelist
pra - Praeses
pre - Presenter
prn - Production company
prs - Production designer
rdd - Radio director
rpc - Radio producer
rsr - Restorationist
sll - Seller
sgd - Stage director
tld - Television director
tlp - Television producer
wac - Writer of added commentary
wat - Writer of added text
wal - Writer of added lyrics

Deprecated relators:
clb - Collaborator
voc - Vocalist

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>