Add 'Degree' field to series editor contributor fields in collection metadata UI
Expected behaviour
Should be able to migrate all supported fields related to collection contributors.
Current behaviour
Degrees are missing.
Steps to reproduce
Create a collection and try to add all the contributor information for the series editors in this existing Bookshelf collection: https://www.ncbi.nlm.nih.gov/books/NBK53199/
Priority
Y, for migration