Search operator for facets and aggregations #70
Description
Enhance our search api with an aggregation and facet operations.
For example: create searches on standards, or "facet" several standards together in a list with associated resources "rolled up" under each facet.
maybe something like this (we probably should discuss this better):
/search?facet={"group":"standard","aggr":"resources"}
/search?facet={"group":"author.name","aggr":"count"}