v2.7.2

Notable enhancements and fixes

• Accessibility pass: corrected dialog semantics, improved focus management, added missing icon labels, and set the html lang attribute correctly.
• Chat: clicking the chat icon works again, disabled toggles render properly, and the username layout no longer overflows.
• /export/etherpad now honors the :rev URL segment, so revision-specific exports return the requested revision instead of the latest.
• Undo / redo now scrolls the viewport to follow the caret, so reverted edits stay in view.
• Page Down / Page Up now scrolls by viewport height instead of a fixed line count, matching standard editor behavior on tall and short windows alike.
• Editbar: caret is restored to the pad after changing a toolbar select, so typing continues in the document instead of falling through to the toolbar.
• Admin: i18n is restored on /admin so the admin UI is translated again.