The ENABLE_CORS_HEADERS feature flag is already true for the LMS.
Instead of duplicating it for Studio via yaml settings, make this a
common Django setting to both LMS and CMS and all their environments.
- 💥 [Feature] Upgrade to Nutmeg: (by @regisb)
- 💥 [Feature] Persistent grades are now enabled by default.
- [Bugfix] Remove edX references from bulk emails ([issue](https://github.com/openedx/build-test-release-wg/issues/100)).
- [Improvement] For Tutor Nightly (and only Nightly), official plugins are now installed from their nightly branches on GitHub instead of a version range on PyPI. This will allow Nightly users to install all official plugins by running ``pip install -e ".[full]"``.
- [Bugfix] Start MongoDB when running migrations, because a new data migration fails if MongoDB is not running
