The ToolbarView has been perfected as much as possible. It now works better than the original :) - The Edit app now also tracks the highlighted editor, not only the active editor. - The ToolbarView and FieldDecorationView are now applied to the property editors themselves, not the editable entities anymore. It now visually matches the original. - Significant clean-up/refactoring of the ToolbarView, including proper docs (for most things). - Toolbar UI selection prevention now happens through CSS instead of JS. - Only the state change detection still needs to be cleaned up.