change over the modulestore configuration to be a dict and use a property accessor. Also update some django-admin configs to use this means to set the runtime configuration

WIP: added a get_modulestore_type. Added some unit tests. changed over the isinstance() with respect to modulestores to use this get_modulestore_type()

add a set_modulestore_configuration to the modulestore interface. This can be used to pass in settings run the Django tier

initial commit for a mixed module store which can interoperate with both XML and Mongo module stores

Contentstore views pylint fixes

Workaround for issue

Better wording of commit

Workaround for issue

Better wording of commit

Fixed spacing

capa optioninput template was missing msg output (needed for hints)

Make split mongo read-only API consistent with other modulestores.

Add test for invalid YouTube IDs strings

Also clarifies the contraction of location.course_id by throwing an exception for lcoations that are not of category course.

Add test for course_id method.

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