Added test #5078
[DOC] Updated the Ruby gem version for Elasticsearch 0.90.x
Beefed up DeleteByQueryTests to run not just against a single document
[TEST] disabled replicas in validate query test
[DOCS] added `discovery.zen.publish_timeout` to the dynamic settings list
[DOCS] Documented `discovery.zen.publish_timeout` setting
Improved ClusterSettingsTests

more assertAcked, checked that the `discovery.zen.publish_timeout` has been changed in `DiscoverySettings`, removed restriction on number of nodes, doesn't seem needed.
Minor cleanups in ShardsLimitAllocationDecider
[DOCS] added coming tags for `zen.discovery.publish_timeout` made dynamic
Made highlight query also work in the percolate api.
[DOCS] Changed coming[] to added[] for 1.0.0*