Issue #2391101 by thehong: Comment for ResponseHandler::getReportFormValidate is misleading.
Issue #2391089 by thehong: Add QuestionHandlerInterface::onNewQuestionTypeCreated().
Issue #2391113 by thehong: Implement default ResponseHandler::delete().
Add ResponseHandler::setAnswerInput().
misc
Make strings in ResponseHandler::getFeedbackValues() translatable.