Replace "edX Studio" with "{studio_name}"

For theming and internationalization
Refactor sock HTML to have text in Mako template
only display the count for coupon redemptions that actually went through to purchase completion
Use STUDIO_SHORT_NAME for Studio

STUDIO_NAME = "edX Studio"
STUDIO_SHORT_NAME = "Studio"
Add settings comment about STUDIO_NAME and STUDIO_SHORT_NAME
Merge pull request #6309 from edx/db/edx-studio-as-format-string

Replace "edX Studio" with "{studio_name}"
Revert #6192. It was causing a JS error on devstack.

TNL-1070
Merge pull request #6366 from edx/christina/fix-editing-bug

Revert #6192. It was causing a JS error on devstack.
Merge pull request #6330 from edx/cdodge/filter-unpurchased-coupons

[WL-186] only display the count for coupon redemptions that actually went through...
make block.get_parent() work.

Co-Authored-By: Christina Roberts <christina@edx.org>
Co-Authored-By: Daniel Friedman <dfriedman@edx.org>
Co-Authored-By: Don Mitchell <dmitchell@edx.org>
support group_access.  JIRA: TNL-649
test that students are auto-assigned to cohorts in partition scheme
creation of a courseware preview menu to contain staff view toggle.
Extend preview to support cohorted courseware

TNL-651
Studio: adding UI and styling for component-level access modal
Studio support for cohorted courseware

TNL-652
UX for associating content groups with cohorts in the instructor dashboard.
Create a RESTful handle_cohort view method for GET and PUT/POST.
Use edx namespace for Backbone classes
Assign cohorts to groups in the instructor dashboard

TNL-653