migration: copyright and license

[kpsherva]

description in https://docs.google.com/spreadsheets/d/1S5x0pP1WnSIWPDZ_7WyFx87aHZ_Ni6y8v1nSC2TBNfg/edit?usp=sharing

Fields to implement:

copyrights:
542__3
542__d
542__f
542__g
542__g
542__u
license:
540__3
540__a
540__b
540__f
540__g
540__u

540__a values

CC BY-NC-ND 3.0 US
CC BY-NC 3.0
CC BY NC ND 4.0
CC BY-NC-ND
arXiv nonexclusive-distrib. 1.0
CC-BY-3.0
Open Access
CC-BY-NC-SA-3.0
Veröffentlichungsvertrag für Publikationen ohne Print on Demand
Veröffentlichungsvertrag für Publikationen mit Print on Demand
CC-BY-SA-4.0
CC-BY-4.0
CC-BY-NC-ND-3.0
CC-BY-SA
CC-BY-NC-SA 
CC BY-NC-ND 4.0 
CC-BY-NC-ND-4.0
CC-BY-NC-4.0
CC-BY-NC-SA-4.0
CC-BY-NC-ND 4.0
CC BY 4.0
CC-BY-NC-ND
CC-BY
CC-BY-SA 4.0
arXiv nonexclusive-distrib 1.0
CC BY-NC 4.0
CC-BY-NC-ND 3.0
CC-BY-NC 4.0
CC-BY-NC-ND-3.0-DE
CC BY-SA 4.0
CC BY-ND 4.0