Reorders components in unit page via drag and drop. This PR also refactors and moves draggable list and sortable item components to appropriate location.
Course authors will be affected by this change.
* View a unit page, which has its own URL
* Components appear within a unit as full previews. Their top bar shows type icon and title on the left, and draft status (if any), tag count, overflow menu, and drag handle on the right.
* Components have an overflow menu within a unit
* Components can be selected within a unit
* When components are selected, the standard component sidebar appears. The preview tab is hidden, since component previews are visible in the main content area.
* Components within a unit full-page view have hover and selected states
* Unit sidebar preview.
* Frontend implementation Drag-n-drop components to reorder them in unit.
Fixes a bug where the form is submitted multiple times when the user presses Enter on the Unit create form.
The issue was that when the user hit Enter, the form was submitted without calling the button's onClick, allowing multiple calls. Also, because the onClick was not called, we had to add the isLoading property to the LoadingButton to display the status correctly.
Before, clicking "new problem" (etc) would create a new block, then launch the editor. Now it launches the editor and then creates the new block only on save. This makes the "Cancel" button work as expected. Only affects libraries so far, not courses.
Fixes some a11y and performance issues for Library Authors
**Accessibility**
* When navigating between the various Library Authoring pages, the search keyword box should not be auto-focused, so focus will follow the user's click/tab events and keep that continuity.
The course content search modal behavior is unchanged -- loading this modal auto-focuses the search input box as one would expect.
**Performance**
* Navigating between the various Library Authoring pages was causing a full re-mount of the `<LibraryLayout/>` component
* React query's `staleTime` option is used to control how long data is considered fresh in both queries and routes. By default, the `staleTime` for queries is set to 0 milliseconds, meaning that the data will always be considered stale and will be refetched whenever the query is mounted.
Creates the AdvancedEditor to support editors like Drag and Drop, openresponse, poll, survey, and other advanced editors.
- AdvancedEditor created to call studio_view of the block
- Update LibraryBlock to support any view (and use studio_view in AdvancedEditor)
Intercept xblock-event message to close the Advanced editor on cancel or save
Adds new routes and URL parameters to use when viewing and performing searches on library components. These changes allow these pages to be bookmarked or shared by copy/pasting the browser's current URL.
No changes were made to the UI.
Use cases covered:
* As an author working with content libraries, I want to easily share any component in a library with other people on my team, by copying the URL from my browser and sending it to them.
* As an author working with content libraries, I want to easily share any search results with other people on my team, by copying the URL from my browser and sending it to them.
* As an author working with content libraries, I want to bookmark a search in my browser and return to it at any time, with the same filters and keywords applied.
* As an author of a content library with public read access, I want to easily share any component in a library with any authors on the same Open edX instance, by copying the URL from my browser and sending it to them.
* As an author of a content library, I want to easily share a library's "Manage Team" page with other people on my team by copying the URL from my browser and sending it to them.
* As an author working with content libraries, I want to easily share any selected sidebar tab with other people on my team, by copying the URL from my browser and sending it to them.
* Makes the Active Tab Key independent from the URL, except for the initial load, where the active tab is set from the url.
*Avoids unnecessarily changing SearchParams: Due to a limitation of the useSearchParams react hook, which uses a memoized value for the URL that becomes stale after selecting a tab, it unexpectedly changes the URL value. Unfortunately there's no way to completely avoid this, so if there's a usageKey url param, the hook setter function will be called and the URL will revert to the stale memoized url.
