Adding django default log handlers into logging configuration
Updating settings and requirements for lms and cms to support file upload
updating ora2 version
Updating AWS settings
Unit test to demonstrate bug
Deleting a private unit should remove it from the course
STUD-1962
Subsume browser links to variables, to exclude from translation
Show thread user to staff when only anonymous_to_peers is true
FOR-122
Merge pull request #4297 from mlkwaqas/waqas/for122-anonymous-post-are-anonymous-to-staff

Show thread user to staff when only anonymous_to_peers is true
Merge pull request #4379 from Stanford-Online/kluo/exclude-browser-translation

Subsume browser links to variables, to exclude from translation
New "Active Students" data on instructor dash
Merge pull request #4376 from edx/ahodges/documentation/activestudents

New "Active Students" data on instructor dash
Added discussion label change to release notes
Merge pull request #4387 from edx/markhoeber/documentation/doc-748

Added discussion label change to release notes
Defensively checks that children exist in has_changes
overriding a few more log levels for acceptance tests
disabling zendesk in lettuce tests and removing help/feedback lettuce tests in favor of the existing JS ones
Disable failing video language test
Merge pull request #4393 from edx/zoldak/disable-video-lang-test

Disable failing video language test
setting default system to be lms