UP-3632 Refactor the "Popular Portlets" controller logic to use the new aggregation methods/data.
UP-3632
Refactor the "Popular Portlets" controller logic to use the new aggregation methods/data.
UP-3632 Clean up popular portlets controller

Convert from web-flow to simple controller based portlet
Add query API to PortletLayoutAggregationDao so a single query can be used to get all of the data
Use resource request for JSON data load
Use new url syntax for links to popular portlets