working for public/private permissions on questions honoring public/private on forms
updated AnswerFinder to abide by the form public/private permissions for responses and answers
works with eager loading
refactored to use answer serializer, simplified logic in answer_finder, moved default_serializer_options to base api controller and removed from child controllers
refactored responses to use seralizers, created scope to get answers for questions which are not private or null access_level
added another test, cleaned up some whitespace
added pagination to missions, responses, answers
more eager loading
moved serializers into namespaces, had to use each_serializer for some reason? but specs work still.
Merge pull request #16 from thecartercenter/1140-answers-responses-honor-public-private-permissions

fixed bunch of stuff from code review