* Make dataengines work fully standalone
* Fix panel icon sizing
  There's still an issue with the popup size when resizing the vertical panel smaller so it collapses
* Implement keyboard navigation for the list with focus hacks...
  Delete key closes notifications or groups, Arrow left/right expand/collapse groups, Enter invokes default action, if any
* Fix DND times that are supposed to be hidden showing
  ModelContextMenu doesn't respect "visible" property
* Move "Notifications" header to ListView header so it scrolls away and leaves more room for the notifications in systray popup
* Fix finished jobs in history showing as failed when app is closed
* Don't remember apps that spawned jobs, only for notifications
* Use CriticalNotification window type (patches pending)