Media Cleaner Pro 6.7.3

* Update: Support for nonces.
* Fix: Support for WooCommerce Downloads.
* Fix: Some settings could not be changed when Filesystem was selected in Dashboard.
* Add: Support for Justified Image Grid.
* Add: Support for Custom Logo in themes.
* Add: Support for Background Images in Avada (Fusion Builder).

* Fix: Works even if the Permalinks are disabled.
* Fix: Create the DB as soon as it is required.

* Fix: Avoid a notice with WP 5.5 (wp_make_content_images_responsive is deprecated).
* Fix: Retrieve the correct path for the Rest API on every kind of install.