minor cleanup of pull request comments within scss files, along with removal of some whitespace in text fixture file for rubrics

Proper scoping, show status to staff, fix line break issues, multiple self assessments on one page work

cleaned up padding for peer review training and grading states, removed extraneous response label,fixed style issue on rubric for peer grading where rubric items had a background color overridding the intended style

Conflicts:
	common/lib/xmodule/xmodule/open_ended_grading_classes/combined_open_ended_modulev1.py

Fix/vik/oe issues

Fix error seen in combinedopenended modules

Move the silencing of numpy's warnings into test_calc.py

..because that is where it is the most annoying/visible. Otherwise it really
has no effect on the LMS or anything else.

catch error in delete_course management script when group does not exist

Add filter for playback rates.

turn off i18n

Fix error seen in combinedopenended modules

The enrollment_action value enroll should not be translated.

Add Course Modes to LMS