D-Net

added serialization, tests

instantiate one SAXReader for each call

fixed format-layout-interpretation concatenation,
doesn't fail when the fieldExtractor returns a null result

added json serialization, builds the matching key one time only

updated profile to new OAI schema

using format-layout-interpretation to define the OAI store collection name

The expected name of collection is format-layout-interpretation

do not upsert sets here in the mapper: we shall delegate to a separate workflow to be run after the OAI feeding is completed.

early implementation of jar upload script

Always new records to test how faster we go