Fix in which setting the date by dragging onto the calendar resulted in an error.  This was because the reduced_scoring_date was not set correctly.
Merge branch 'ww3-feature/calendar' of https://github.com/pstaabp/webwork2 into ww3-feature/calendar

* 'ww3-feature/calendar' of https://github.com/pstaabp/webwork2:
  Fix in which setting the date by dragging onto the calendar resulted in an error.  This was because the reduced_scoring_date was not set correctly.

Conflicts:
	webwork3/public/js/models/ProblemSet.js