Model features for outstanding quiz detection

When quiz submissions are overdue and unsubmitted, we need to provide a
teacher with the means to find and fix those problems. Here we've built
the model access features to enable finding and grading of these
submissions, by quiz_id.
Closes CNVS-15274
Test Plan:
  - Confirm passing specs
    - No real QA testable features here
      - Confirm normal quiz submission behavior
Change-Id: I72c6bd2fc740c31c901e29d26eba9fe87a6baba2
Reviewed-on: https://gerrit.instructure.com/40821
Reviewed-by: Ahmad Amireh <ahmad@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Trevor deHaan <tdehaan@instructure.com>
Product-Review: Ryan Taylor <rtaylor@instructure.com>