WindowBehaviour: Add 'data-window-hint' to body when manipulating windows
WindowBehaviour: Add 'data-window-hint' to body when manipulating windows

andersevenrud/OS.js-v2,andersevenrud/OS.js-v2,andersevenrud/OS.js-v2,andersevenrud/OS.js-v2,andersevenrud/OS.js-v2