[DAPS] Add NiH to general pipeline

[jaklinger]

NiH data is not added to the general pipeline yet, since the deduplication strategy currently relies on creating two indexes in Elasticsearch:

• one for all documents including dupes and applying deduplication logic, and
• one for the deduped documents.

This doesn't fit within the general pipeline paradigm, and so one strategy would be:

• dynamically create an ES instance specifically for deduplication
• run the deduplication, saving the ids somewhere
• automatically delete the instance
• create a curated subtable under the orm_general and pipe the deduped, curated items here
• add sql2es for this dataset to general