BLD-1121: Create new group configurations page.
Merge pull request #4290 from edx/anton/create-new-configurations

Create new group configurations page.
Add JQuery timepicker CSS to the unit and container templates
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
Merge pull request #4411 from edx/anton/group-experiments

Create new group configurations page
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
Merge pull request #4414 from cpennington/fix-get-module-calls

Fix calls to get_module to not pass course ids as positions
Fix quotation mark & apostrophe related i18n bug

Just done by adding a custom mako filter that calls json.dumps :)