Replace references to .system
Add rb-inotify dependency
Fix import errors with unicode filenames
Add tests for imports with unicode filenames
Fix unicode errors on exceptions and logging
Use upside-down english for unicode text
Remove unnecessary encode
Bump diff-cover version
Cleaner tests
Utility functions for finding courses by id
i18n: submit buttons at dashboard
i18n: staff/student toggle link
i18n: problem submit buttons.
Improve accessibility for forums post toolbar

Mark toolbar and buttons with appropriate ARIA roles, add them to the
tab order, and make the titles more screen-reader friendly.
Indicate that rb-inotify and rb-fsevent aren't actually necessary
Fix a bug in links on forum user profile pages

Previously, if a course id contained a '-' character, links from that
page to threads would lead to 404s.
LMS: resolves direct class name references to extends that have been converted to placeholder Sass syntax
Merge pull request #1003 from edx/gprice/fix-user-profile-links

Fix a bug in links on forum user profile pages
Update CHANGELOG.rst
Update CHANGELOG.rst