Board focusable

BingoBoard.py

@@ -14,6 +14,7 @@ class BingoBoard(Widget):
 
     def __init__(self) -> None:
         self.fieldstate = [False for _ in range(25)]
+        self.can_focus = True
         super().__init__()
         self.fields = [
                 'Deko aufgehängt',