nfs and testing artifacts
An individual due date extension may be set for a student for a
particular problem in the capa module.
Ability to set due date extension for entire homework or exam.
Display correct dates in UI.
Fix InvalidWriteError when viewing a combined open ended problem in the LMS as an instructor.
Get extended due date to work with combined open ended module.
Use extended due date (unable to test FoldIt module).
More user friendly unit selection.
Dump due date extension data and reset due date extensions.
Test closing date respects due date extension.
Fix test broken by eb76cf117e1da3311c5aa6be3b308fcbb88021e9
Unit tests for due date extensions.
Don't gather units with due dates unless due date extension is active.
Require user to actively choose a unit for due date extensions. User friendly error message if user fails to do so.
Improved success message for due date extensions.
Merge pull request #1338 from jazkarta/feature-mitx-idde

Feature -- Individual Due Date Extension