Switch journal name completion to use new elasticsearch functionality

[markpatton]

See https://www.elastic.co/guide/en/elasticsearch/reference/current/search-as-you-type.html

This requires an update to a new elsaticsearch and a change to the elasticsearch index configuration. This also means that pass-indexer could have some special case functionality removed and give us greater flexibility in the future.

[markpatton]

But would require a major upgrade to the Elasticsearch version and would need input from operations.