Rails 5 - Comments Controller Spec fix (#336)

* permit params and convert to_hash because params no longer inherits from HashWithIndifferentAccess

* fix backwards breaking behavior. update moderations_controller. need to permit params in order for added attributes to be included when converting to a hash with to_h

* permit params on index and then convert params .to_h so serializer.page has access to parameters

app/controllers/concerns/action_rendering.rb

@@ -5,7 +5,8 @@ def index
     authorize model_class
     scoped = policy_scope model_class
     params[:sort] ||= serializer_class.default_sort if serializer_class.default_sort
-    render json: serializer_class.page(params, scoped, current_user: current_user)
+    params.permit!
+    render json: serializer_class.page(params.to_h, scoped, current_user: current_user)
   end
 
   def show