Implement filtered REST query on ElasticSearch

[bajiat]

If the REST query is filtered (instead of filtering on the client side), this reduces latency, resource usage, traffic.

Determine how to create custom REST queries to ElasticSearch engine.
Add widgets for defining query parameters.

User stories:
As Minh (API consumer), I want to view my API statistics to be able to see, how frequently my application is used.
As Harri (API administrator), I want to view API analytics by user, by location, by time(?)

Definition of done

• Determine how to search entire analytics index.
• Determine if it is possible to do parameterized searches on collection index,
• Create basic Meteor method for accepting parameters for ElasticSearch analytics index.