Kibana v4.1.11 with AWS proxy support

v4.1.11-aws

Merge remote-tracking branch 'elastic/4.1.11' into 4.1.11-aws

Kibana v4.1.4 with AWS proxy support

v4.1.4-aws

implementing AWS proxy for kibana 4.1.4 branch

AWS signing support for AWS hosted ElasticSearch

This release is built off of the 4.0-aws branch to add support for communicating with the AWS ElasticSearch service.