Many tweaks to use MC in an iframe with less clutter

assets/layers/questions/questions.json

@@ -2743,6 +2743,7 @@
           "_last_edit:passed_time>=300"
         ]
       },
+      "metacondition": "__featureSwitchEnableLogin=true",
       "render": {
         "special": {
           "type": "if_nothing_known",

assets/layers/summary/summary.json

@@ -1,6 +1,6 @@
 {
   "id": "summary",
-  "description": "Special layer which shows `count`",
+  "description": "Special layer which shows `count`, probably provided by the clustering server or some clustering algorithm",
   "source": "special",
   "title": {
     "render": {
@@ -16,7 +16,14 @@
         "centroid"
       ],
       "iconSize": "40,40",
-      "label": "{total_metric}",
+      "label": {
+        "mappings": [
+          {
+            "if": "total_metric!=0",
+            "then": "{total_metric}"
+          }
+        ]
+      },
       "labelCss": "background: #ffffffbb",
       "labelCssClasses": "w-12 text-lg rounded-xl p-1 px-2"
     }