Get scores by course_id and student_id

I don't know if we were going for irony, but it bugged me to have a grammar error in a prompt partially about grammar.

This is what will be called by the LMS when querying the submissions
app for the raw scores of a student in a particular course.

[TIM-232]

Step UI Fixes

WIP: UI Transitions

* syncing class names used for toggling across UI
* adding in basic style for expanding/collapsing
* revising DOM manipulating JS

Adding is--complete styles to some of our grading badges, and adding new...

Post-release rubric validation

These status badges will help clarify your current state.

Updating the grade_mixin to allow max points

Adding some over grading logic so kick in after submission deadline

Adds some use of submission deadlines to kick into over grading as needed.

Switch to using migrations

Prevent authors from submitting essays in Studio Preview mode

Revert management cmd

Avoid modifying an XBlock field (part 2)

Add fixtures for proofing the LMS

This reverts commit e0f5a8aa.

Conflicts:
	apps/openassessment/management/tests/test_create_oa_submission.py

Accept numeric xblock trace values

Avoid modifying rubric_criteria field

User innerHTML instead of innerText to support firefox

FIX - Re-clutter xBlock Workbench UI

Grade Status Template/Styling Work

There was a leftover TODO that needed to be fleshed out around the grading status. This will now list all the remaining steps when going through the assessment process.