[Fixes #CNVS-1145]
* Adds support for attaching AssignmentOverrides to quizzes
* Links common overrides for Assignments that belong to Quizzes
so quiz.due_dates_for(user) == quiz.assignment.due_dates_for(user)
* Moves common functionality for VDD out of the Assignment model
and into the DatesOverridable module, which is now included on
Quiz for a consistent interface
Test plan:
* Run through a few of the old VDD scenarios and verify things
still work as expected since a lot of code has shifted around
* No interface changes have been made to quizzes yet, so nothing
to check there
https://gist.github.com/f12b3694016f3dcc979e
Change-Id: I32b4a54273f90fac689e05174039b8efc952dd39
Reviewed-on: https://gerrit.instructure.com/16028
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Simon Williams <simon@instructure.com>
QA-Review: Simon Williams <simon@instructure.com>
Dave Donahue