Update translations (autogenerated message)

AC-578 Fix marketing link key typo

Standardize logged errors

Grades python integration tests

Release

TNL-5465
TNL-802

TNL-5465

For easier consumption by splunk, match the pattern used by other grades-
related log statements. Also, reduce the firehose of events being logged
in splunk.

WL-603 load locale paths for themes directories

Revert "[SOL-1953] Update Commerce Configuration"

Add an OEP-2 compliant openedx.yaml file

tests for changing grade policy
and moving progress page tests into separate file

AC-571 updating video download/transcript area

and moving progress page tests into separate file

Revert "Add fa loading spinner to CAPA problems"

Release Candidate rc/2016-09-20

Remove outdated comment

This reverts commit a3eb726f.

The `commit` argument had already been removed from code [1][2][3],
prompted by the django18 upgrade.

[1] https://github.com/edx/edx-platform/pull/10927
[2] 07f015bb
[3] a4006c86

Fix alignment of "mark as answer button" by adding btn-link class

TNL-5586

HULL-103 Add the course root to the bulk email template context so that templa…

MA-2663: Donot mark thread unread on any action but creation

SOL-2076: check settings.DEFAULT_SITE_THEME to be not None before applying default theme

Avoid to use an unsupported '/' operand between two unicode strings

Add the course root to the bulk email template context so that templates can customize the full course URL with a custom hostname.

Fix bottom-border of last discussion thread in list

TNL-5571

Remove icon-aria-hidden rule for a11y discussions

Adjustments to course dashboard visual styles 

Replace discussion topic selector with a native dropdown

TNL-4637 TNL-4641 TNL-4645