5.3.1

Fixed:

• Core: Fix building the css directory from scratch #2551
• Core: Fix language not set in frontend templates #2530
• Core: Fix the ck editor custom icons #2557
• Extensions: Fix upload module #2571
• Mailmotor: Update composer version to get mailchimp fixes #2568
• MediaLibrary: Fix media browse images and videos js errors #2572

Changed:

• Core: Optimize fetching the page extras #2555