change submission history to be ordered by id

HOTFIX: Accept either a list of possible values, or a string as a value for

I'm pulling this in myself because it's urgent, it's the weekend, and I don't want this to get forgotten.

comparison of correctness in multiple choice.

Multiple choice code is scattered and sometimes sends a list of
choices for the value, and sometimes a single string. We used to use
"in" which scarily handled both cases (list or substring search),
but that caused a bug when you had two choices like choice_1 and
choice10. Moving to == caused us to break when lists were sent to
us. So this ugly code is extra paranoid and checks both possibilities.

This really needs a better cleanup.

Fix/vik/add oe tab

add checking for metadata that we can't support editing for in Studio. T...

Feature/cdodge/course overview perf

Enough is enough.

add an 'allowed' list of metadata (e.g. display_name, etc.) and also restrict metadata on sequentials

Feature/will/speed up unit tests

Conflicts:
	cms/djangoapps/contentstore/utils.py
	cms/djangoapps/contentstore/views.py
	cms/djangoapps/models/settings/course_metadata.py

Remove the default and prevent input_state from persisting across problems

unnecessary data.

Fixed bug in parsing of urandom struct so that seed

is set to an integer (and correctly saved) instead of a tuple.

Content/rocha/utaustinx courses

over all test runs.

Bug fix for grading type not showing on course outline (#258).