Themes: add toilet layers automatically if toilet information is included

assets/layers/questions/questions.json

@@ -3358,6 +3358,19 @@
             "en": "Has no toilets",
             "nl": "Heeft geenad toiletten"
           }
+        },
+        {
+          "if": "toilets=separate",
+          "then": {
+            "en": "The toilets are marked separately on the map",
+            "nl": "De toiletten zijn als alleenstaand punt op de kaart aangeduid"
+          }
+        }
+      ],
+      "requiredLayers": [
+        {
+          "id": "toilet",
+          "minzoom": 18
         }
       ]
     }