#63978804 Moved SurveyInvitation to Survey::Invitation
#63978804 Moved SurveyResponsesController to Survey::ResponsesController
#63978804 Moved SurveyResultsController to Survey::ResultsController
#63978804 Moved SurveySummariesController to Survey::SummariesController
#63978804 Moved survey mailers to survey namespace
#63978804 Moved QuestionResponse to Survey::QuestionResponse
#63978804 Moved QuestionResponsesController to Survey::QuestionResponsesController
If you've got nothing to render, just have an empty file, rather than hiding exceptions
Refactor: Bring MultipleChoiceQuestion specific logic in to partial
Refactor: Use collect