move quiz submission grading to individiual object

closes CNVS-12538

test plan:
  - as a student take a quiz
  - verify that:
    - background submissions are working
    - end of time / date submissions are working
    - manual submsissons are working
  - verify various question types are graded correctly
  - verify outcomes work as previously defined

Change-Id: Ibdab88a4bf57f953330f576cb9b73c0ddb795d55
Reviewed-on: https://gerrit.instructure.com/33618
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Josh Simpson <jsimpson@instructure.com>
QA-Review: Caleb Guanzon <cguanzon@instructure.com>
Product-Review: Jason Madsen <jmadsen@instructure.com>