A new modulestore backed by mongo that changes the data format to facilitate easy versioning, sharing content between courses, and fast lookup of course structure and Scope.settings data. Conflicts: cms/djangoapps/contentstore/tests/test_contentstore.py
Common test infrastructure for LMS + CMS
data/ has some test course data.
Once the course validation is separated from django, we should have scripts here that checks that a course consists only of xml that we understand.