Fix reference issues
Merge pull request #552 from edx/peter-fogg/course-update-notifications

Notifications for course updates.
Merge pull request #557 from edx/christina/html-latex

Fix missing source_code in LaTeX  HTML.
Merge pull request #525 from edx/jkarni/docs-merge

Jkarni/docs merge
resolve merge conflicts
add escaping
move instructor views.py to views/legacy.py
fix repoint dump_grades script
add instructor dashboard beta (partial) (view, template, coffeescript, api endpoints)
remove pid and version
add slickgrid assets
integrate slickgrid, add instructor.enrollment, add instructor.access, refactor & clean
rename enrollment section to membership
add staff management subsection, add student_admin subsection, refactor sections
add instructor dash version switch
add forum list management
add beta to endpoint, rename endpoint
cleanup

- rename list copy
- add beta list
- fix forum and admin API's to be more similar
- add auto-enroll checkbox
- fix list reload
- remove extra js logging
- add course errors visibility toggle
- add underscore.js check
add instructor tasks
visual cleanup, page error presentation cleanup, factor out common exceptions