• Fix: Allow label_format to be set to an empty string to hide the block summary label (Sage Abdullah)
• Fix: Better support userbar loading on multi-site through site hosts (Sage Abdullah)
• Fix: Prevent error on custom generic create and edit views without a header icon (Sage Abdullah)
• Fix: Use the correct origin when computing content metrics via cross-origin communications (Sage Abdullah)
• Docs: Link to django-treebeard's Node.move() in Page.move() documentation (Baptiste Mispelon)