working plp and rule based pages for Product endpoint. Missing fixes to brand category and issue with missing category facet in rule based pages
apply code review changes
fix broken unit tests after product-api endpoint improvements
Merge remote-tracking branch 'upstream/develop' into develop

Conflicts:
	opencommercesearch-api/app/org/opencommercesearch/api/controllers/ProductController.scala
	opencommercesearch-api/conf/routes
	opencommercesearch-api/test/org/opencommercesearch/api/controllers/CategoryControllerSpec.scala
Merge pull request #92 from gsegura/develop

Product-API endpoint fixes