Class based for 'quiz_categorized_form' form.
RIP quiz_remove_partial_quiz_record_value().
Class based for 'quiz_questions_form' form.
Move details of hook_menu() to helper class.
Fix bugs on QuizQuestionsForm.
RIP _quiz_delete_results().
RIP _quiz_taxonomy_select()
Clean up theme_quiz_categorized_form().
Clean up quiz_set_auto_title().