Init elasticsearch

[at15]

• [ ] setup java in box
• [ ] setup els
• [ ] try els graph (note: it is a commercial plugin, need subscribe after 30 days ... ) https://www.elastic.co/products/graph

[at15]

may still use http://orientdb.com/orientdb/ for graph. But the java api sucks .... e ... I guess I can use a java server for all the els stuff and orientdb stuff ... may go back to dropwizard .....

or use a rest php client for it.

[at15]

also https://github.com/jaeksoft/opensearchserver could be considered ... though really lack of documentation ....