Update Console plugin for ES 6.0 APIs

[ycombinator]

Currently the Console plugin (formerly known as Sense) supports Elasticsearch 1.x and 2.x APIs. With Elasticsearch 5.x coming, the plugin should support its APIs as well.

[ycombinator]

From @skearns64 in elastic/sense#129 (comment):

Also note that more changes may be coming for 5.0: elastic/elasticsearch#17705

[polyfractal]

On the ES side, we started to document which of the APIs/parameters/queries are missing from the autocomplete to help Kibana-land identify the holes. This ticket was just pointed out to me, so here's the current work:

https://gist.github.com/polyfractal/045914cb86a9a05a0afb87f313e3474c

I'll be updating the gist as I work through the API to find more holes. I'm focusing on the search API to start since it's the biggest footprint users see. Finished checking all top-level params, just getting into the queries. Aggs/pipelines are next.