Merge pull request #1236 from raydavis/raywip

CLC-2055 Adapt Canvas refresh tasks to Torquebox environment
CLC-1971 Update My Classes dummy feed
CLC-1971 - Front-end - Show all classes
https://jira.media.berkeley.edu/jira/browse/CLC-1971
CLC-1971 Restructure CampusUserCourses to include all sections
CLC-1971 Merged & categorized Canvas sites feed for new My Classes & My Groups
CLC-1472 Point a class-site Canvas Group to its context's course_code
CLC-1971 Restrict My Classes feed to sites which match official enrollments
CLC-1971 Adapt My Groups feed to new source feeds
CLC-1971 Groups have titles but Classes have names