Add JQuery timepicker CSS to the unit and container templates
Change answer <-> response matching in capa.get_submission_metadata
Fix pending name changes template

- Strings marked for translation need to be wrapped in quotes to be
string type.
- Update old post function call
- Remove extra close brackets in function definitions
- Wrap href attribute in quotes
- Move square bracket outside of translated text
Add promise to ensure unit visibility is changed
Update (optional) Group Configuration urls to use settings.COURSE_KEY_PATTERN.
Merge pull request #4423 from edx/tim/group-conf-course-key-pattern

Update (optional) Group Configuration urls to use settings.COURSE_KEY_PATTERN
Merge pull request #4416 from edx/will/timepicker-css-in-unit-editor

Add JQuery timepicker CSS to the unit and container templates
Merge pull request #4420 from Stanford-Online/kluo/fix-name-changes-template

Fix pending name changes template
Fix calls to get_module to not pass course ids as positions
New chapter on discussion features for all users
Merge pull request #4414 from cpennington/fix-get-module-calls

Fix calls to get_module to not pass course ids as positions
Check to make sure that the mysql service is running.
Create the test database if it doesn't exist.

There is a bootstrapping case where the test DB doesn't exist which causes reset_db to fail.
Merge pull request #4372 from edx/ahodges/documentation/discussionoverview

New chapter on discussion features for all users
Make text on register button on About page conditional.

 Added a new advanced setting; invitation_only

 If invitation_only display "Enrollment in this course is by invitation only"
 Otherwise, if outside of enrollment period display "Enrollment is Closed"

 This issue is logged at LMS-2670

 Also fixed in this PR is issue LMS-2717; even though the Register button was greyed out,
 clicking it sent one to the registration page.
Fix a bug in Individual Due Date Extensions (IDDE).

The IDDE implementation relied on a StudentModule being created for a
particular block in order to set the extended due date on that block.
Since StudentModules seem to be created on demand whenever data is
written to an attribute with Scope.user_state, it meant that if a
homework problem hadn't yet been touched by a student it was possible
that the due date extension wouldn't take effect for that problem, even
if the due date extension was successfully set for the parent unit.

This patch fixes this problem by creating new StudentModules as
necessary in order to make sure extended due dates propogate properly to
all problems in a unit.
Merge pull request #4418 from Stanford-Online/dcadams/make_registration_button_conditional

Make text on register button on About page conditional.
Merge pull request #4417 from edx/jbau/event-responsetype

Change answer <-> response matching in capa.get_submission_metadata
Disable test that is leaving modal open.

STUD-1963
Merge pull request #4430 from edx/feanil/fix_bokchoy

Feanil/fix bokchoy