Update the `music_academy.sql` file
Do not store the module status in the `autoload.ini` file
Only apply the CSS class "mandatory" if a field is empty (follow up on #4730)
Make the slider CSS more markup agnostic (see #4600)
Add a missing hash in the changelog
Revert "Make `Controller::loadDataContainer()` public static"

Since this is a backwards compatibility break, the change is postponed until Contao 4.
Show the database ID of a file in the file popup (see #5211)
Restore `cursor:move` for sortable lists
Bypass the Combiner cache in debug mode
Dynamically adjust the "indent" class if content elements are moved