Metadata schema

[lnielsen]

Goal

Finalise the metadata fields of the data model so that other code can depend on it.

Tasks

• Metadata fields (no access, no files, etc):
  • [x] JSONSchema
  • [x] Marshmallow schema update
  • [x] ES mapping update.
  • [x] Basic marshmallow data validation.
  • [x] Implement all basic validation.
• Service:
  • [x] ESDumper extension for EDTF publication_date.
• REST API:
  • Sort
    • [x] Define the default sort fields for RDM.
  • Facets
    • [x] Define default facets for RDM.
    • [x] Support for nested facets (e.g. resource type) - mapping and indexing.
• Customization:
  • Configuration
    • [x] Allow overriding configuration some few options.
    • [x] Allow service to configure ES dumper extensions.