c6c95c63ac
* apply policy per-course, even if multiple courses share course and org fields * keep descriptors separate in xml store, so that if two such courses change the same module in different ways, it works. Such edits will need to merged on CMS import... * add get_instance(course_id, location) method to replace get_item(location). Update all the call sites * tests, including a 2nd toy course with same course and org.
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.