[API] [1.0] Added the "Percolate Count" API

See: http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/search-percolate.html

Related:

* https://github.com/elasticsearch#3430
[API] [1.0] Added the "Snapshot & Restore" API

See: http://www.elasticsearch.org/guide/en/elasticsearch/reference/master/modules-snapshots.html

Related:

* elasticsearch/elasticsearch#3070
* elasticsearch/elasticsearch#3826