Mark main resources with resource=true
Add support for serializer groups to ApiDoc handler

Serializer groups feature implemented in d46bcfddce0de75fd88190bb4b485d1f6fc48096
Merge branch 'feature/apidoc-extractor-serializer-groups' into feature/apidoc-extractor

Main feature merged in 759f9b6db87fc1515ffa10136ad6aa655e28e4ac