- Adds Units, Subsection, and section cards in the libraries sync page.
- Rename of `mockGetEntityLinks` to `mockGetComponentEntityLinks`
- Use the top-level parent logic
- Which user roles will this change impact? "Course Author".
Fixes issues related to component libraries' review/sync flow
* Inconsistent sync pane title versions
* Library content shown in preview warning only appears in review changes modal when that modal is opened from the review tab
* Some new changes only appear within library review tab on scroll at top of list
* Vertically misaligned sync icon in review changes message on course outline
* Show available updates whenever content is updated, regardless of number of updates available
* Adds the sync button in unit cards in the course outline.
* Opens the compare previews.
* Functionality to sync units.
* Functionality to decline sync units.
* 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.
The enables opening a Library Content page within the new Studio unit page. This page displays the xBlocks from the specified library and provides basic configuration options for the library.
