* Adding indexing, searching and default translator for ElasticSearch engine
* Modifying default backend to use ES if it is enabled
* Adding configuration schema to configure ElasticSearch 3 different ways
* Elastic.co hosted solution
* AWS hosted ElasticSearch Service
* Custom, using standard ElasticSearch URL and auth info
* Add and modify some of the documentation regarding search
Signed-off-by: Jussi Hallila <jussi@hallila.com>