This PR changes the preview URL redirect from Studio. Before when a user clicked on the course preview button to check unpublished changes, the preview in the New Experience would show the most recently published version of the course. The unpublished changes that the user was hoping to view are no present. At the moment users have been publishing the content to check it then having to republish the old version if they did not like the changes. As a short-term fix, this PR redirects to the Legacy experience where the preview option previously worked. Now the user can see the unpublished changes. A long-term fix is still being explored. This change will impact the Course Author.
Open edX -------- This is the root package for Open edX. The intent is that all importable code from Open edX will eventually live here, including the code in the lms, cms, and common directories. If you're adding a new Django app, place it in core/djangoapps. If you're adding utilities that require Django, place them in core/djangolib. If you're adding code that defines no Django models or views of its own but is widely useful, put it in core/lib. Note: All new code should be created in this package, and the legacy code will be moved here gradually. For now the code is not structured like this, and hence legacy code will continue to live in a number of different packages.