This allows specification of profile parameters when creating a user. Because
the profile contents are always accessed from the database, the user must be
saved to the database before the profile is created. This means that the
profile cannot be created if the user is merely being built (and not saved)
rather than created.

It was added to 2 different locations by mistake.

this makes it possible to reset open ended response problems

add fixes for 500 bugs (lighthouse 287 and 293) by requiring login for accessing licenses and inline discussions.  Add unit tests for licenses, and rearrange tests based off of (the former) PageLoad.  Also cleanups for pylint and pep8.

Skip over fields that are scoped to students when looping through the CourseModule fields in the instructor dashboard

Taking Ike's delete-student-state-for-problem code and putting it in a separate PR so it's not bundled with more debated features.

- still needs style, more features, but basic functionality works

- lets user see and add cohorts
- needs styling
- needs to allow them to actually manage membership!