Resolve "Too large number of selected players does not break the gui and environment"

Closes #102 (closed)

cooperative_cuisine/configs/study/level1/level1_config.yaml

@@ -8,9 +8,10 @@ plates:
 game:
   time_limit_seconds: 300
   undo_dispenser_pickup: true
+  validate_recipes: true
 
 meals:
-  all: false
+  all: true
   # if all: false -> only orders for these meals are generated
   # TODO: what if this list is empty?
   list: