Allow Quizzes to save without error
Allow Quizzes to save without error

refs QO-800
flag = none

Test Plan:
  In Classic Quizzes, create and publish a quiz being sure
  to check "Let Students See Their Quiz Responses", "Let Students See
  The Correct Answers", and setting the show and hide dates.

  Changes your language to Hungarian/Magyar, and edit the quiz.
  Attempting to Save the quiz should update, and bring you to the quiz
  landing page.

Change-Id: Ie587a7d18f1d53aef9d09ae41495b354a0429860
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/270668
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
QA-Review: Mark McDermott <20dd8ba615f2257ea7254f93d6f30ae11aa4f904@instructure.com>
Product-Review: Susan Sorensen <0d98e282ba669db948aa8e61bd608c56b3926d27@instructure.com>
Reviewed-by: Jorge Arteaga <797aca0b58c1608d2f0b1cb4d451b10108621a94@instructure.com>
Reviewed-by: Jared Crystal <06625ed3fabb97fffd807b5fd3c4e9314fe77676@instructure.com>

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