Issue #2372243 by carlospdl: Fixed Error when new multichoice question is create and no weights are asigned.
Issue #2372363 by thehong: 'quiz_question_latest_quizzes' table is not being used.
Issue #2372393 by thehong: Rename _quiz_question_get_implementations() to quiz_question_get_info().
Fixed an issue with > 10 questions.
Issue #2372613 by idebr: Fixed Multichoice form is duplicated when adding a new choice.
Fixed stray div causing issues on page render.
Issue #1306224: tests for multichoice reordering
Fixed an issue where a resumed quiz uses the wrong version ID.
Remove ajax_quiz module per it's doing nothing .