Schema Formatters and Metadata Views

[jesseeichar]

This is the ticket for a change request to be able to include formatters in schema plugins and implement metadata views for our schema plugins. This is required for geonetwork 3.0.

See https://github.com/geonetwork/core-geonetwork/wiki/Schema-Formatters-and-Metadata-Views for details.

[Delawen]

+1 for me, do we really need this open?

[fxprunayre]

This is available in develop.