Admin panel: Provide additional views for vocabularies

[karkraeg]

As defined in https://codimd.web.cern.ch/UTnvE-L2RrSar3_szWWK_w#RFC-Vocabulary-harvesting provide two additional views:

• CRUD operations for a generic vocabulary
• Search a vocabulary
• CRUD an new entry in a vocabulary (note delete requires specific handling).
• Deprecate an entry -> waiting for changes in datamodel

[karkraeg]

I think right now it's not possible to have a dynamic list view after a initial list view. I see two possible solutions:

• extend the AdminResourceListView class to build dynamic Listviews where titkle, url and api_endpoint depend on the current item
• write a custom react app (like for oai-pmh detail view) that offers the possibility to search and paginate