Add nested ItemsControl with holes.
Remove hole stuff and reduce config
Change game windows to be a Canvas and toggle background
Add holes to map window
Add selection mode and add static hole in specific mode
Merge branch 'master' into mapeditor
Read width/height from the ellipse from the viewmodel.
Create custom canvas to add/remove holes on a gamefield.
Add adding/removing windows to the server and adding callbacks
Change messagebox image to info
Create server for adding/removing holes add handle UI on callbacks.
Fix nullreferenceexception for creating new maps.
Unregister callback when closing the window.
Merge branch 'mapeditor'