#6334 - Support Elasticsearch 1.0+

Upgraded Elastica to v1.3.0.0 and addressed the incompatibility issues with the new API:

* ```text query``` replaced with ```match query``` (cb98f15)
* New ```fields``` structure in search respones (1c21987)
* Deprecated ```multi_field``` type (7a0238d)
* Standard analyzer with ```_none_``` stopwords (ab23b4a)