Fix PHP warnings in some cases.
continue last commit
Rename $question_number to $page_number in QuizQuestionFeedbackController::render().
Simply SQL in ResultController::loadLayout().
Remove @drupal_get_form() hack.
Follow last commit: Fix PHP warning.
Follow last commit: PHP 5.3 compatible.
Update views
Revert "Follow last commit: PHP 5.3 compatible."

This reverts commit 3d1ff5ef80eed1762dbabb03b777ee475d741b47.
Update view: quiz_user_results.
Rename $r -> $response.
Format code
Testing profile should be 'testing'.
Continue last commit.
Rename $quiz_nid => $quiz_qid
Replace quiz_nid => quiz_qid
Remove hack on @drupal_get_form('Drupal\quiz\Form\QuizQuestionsForm::staticGet', $quiz).
Remove hack on drupal_get_form('Drupal\quiz\Controller\Admin\QuizAdminSettingsController::staticFormCallback').
Format code for QuizAdminController.
Fix SQL error in ShortAnswerResponse::fetchAllUnscoredAnswers() and LongAnswerResponse::fetchAllUnscoredAnswers()