adding validator to make sure course exists in db before creating in …

Revert "Fix for flaky TeamDiscussionView js tests"

On the advice of https://github.com/edx/edx-platform/pull/9470,
the render call here is not needed and should be removed in order
to allow the view's owner to determine when it needs to be rendered.

This will hopefully also fix the flaky tests we've been seeing,
we'll need to continue to monitor the builds to be sure.

This reverts commit d64c2b29.

Fix video bumper tests.

TNL-2883

Add sorting controls on topics page.

TNL-1936

Merge pull request #9393 from edx/muhhshoaib/PHX-12-css-changes-instructor-dashboard-proctored-attempts

PHX-112 css styling for proctoring tab student attempts in instructor dashboard

Convert Shib external auth test to use SharedModuleStoreTestCase.

asadiqbal08/SOL-1097-Certificate url do not appears correctly when student share certificate on Linkedin

Flipped the direction of the seq_module arrows

Remove pylint: disable invalid-name for paginator error and fix syntax

Convert UpdateEmailOptInTestCase to use SharedModuleStoreTestCase

PHX-124

Convert class dashboard tests to use SharedModuleStoreTestCase.

Move some CCX view tests to use SharedModuleStoreTestCase (performance).

Speed up Instructor Dash tests + add manual reset for SharedModuleStoreTestCase

PHX-118 added the css for the timer bar visibility when the page scrolls

Also added reset_test_case() and @modifies_courseware to SharedModuleStoreTestCase.

Revert "More verbose test builds in Jenkins, for debugging."

This reverts commit 58cade4cc4288335026649470a48b7bbca969ee8.

Update dummy translation files with Underscore template strings

Adjust the i18n extraction rules to get all the strings we should get.

There's a move afoot to put assets inside individual Django apps,
instead of in upper-level "templates" directories.  These i18n
configuration files have to take this into account.

.underscore files are easy to find by their unique file extension, so
the rule can be simple.  Mako files are .html, so we have to be more
nuanced about it.  We don't want to get pure HTML files, and we don't
want to get .html files for tests, even if they are Mako templates.

Use bulk_operations in group access tests.

Update edx-submissions hash

Add basic elasticsearch search for teams

Potential fix for flaky TeamDiscussionView js tests

Fixes an issue where install_prereqs would occasionally install an old version of pytz because edx-submissions included an old version in its requirements.

After being able to reproduce the errors exactly by making certain
elements unfindable, I concluded that the issues we've been seeing
on headless jenkins runs are due to execution happening too quickly
and elements not loading in time to be interacted with.

The fix is to make liberal use of Jasmine 1.3 `runs` and `waitsFor`
functionality, to ensure that execution happens in the order that
we want, with rendering being checked before proceeding.

Once again, I can't be 100% sure that this fixes the Jenkins errors,
as those are very hard to reliably reproduce, but this is an
educated guess at fixing the problem with no drawbacks, as I've
been able to successfully run all tests locally.