Added MapViewTemplate disclaimer

entity/Organisation_entity/entityfields/map_config/valueProcess.js

@@ -3,6 +3,21 @@ import("system.util");
 import("system.fileIO");
 import("system.result");
 
+/* !WARNING! This openstreetmap TileLayer Server is only used for demonstration purposes and to show how this map template configuration works.
+ * From the tile-usage-policy: 
+ * "Heavy use (e.g. distributing an app that uses tiles from openstreetmap.org) is forbidden without prior permission"
+ * See more about the openstreetmap policy here:
+ * https://operations.osmfoundation.org/policies/tiles/
+ *
+ * This means you have to change the following tile source for using the MapViewTemplate in any real scenario (Dev-Serers, Test-Servers, 
+ * Production-Servers and so on).
+ */
+var selectedTile = {
+    title: "Open Street Map",
+    url: "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
+    attribution: "Map data © <a href=\"https://openstreetmap.org\">OpenStreetMap</a> contributors"
+};
+
 var config = {
     startingCenterPosition : {
         lat: parseFloat(vars.get("$param.MapViewCenterLat_param")),
@@ -16,11 +31,7 @@ var config = {
         maxZoom: 20
     },
     tiles: [
-            {
-        title: "Open Street Map",
-        url: "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
-        attribution: "Map data © <a href=\"https://openstreetmap.org\">OpenStreetMap</a> contributors"
-    }
+        /*add more tile layer sources here*/
     ]
 };
 
@@ -32,5 +43,7 @@ if (vars.get("$param.MapViewAdditionalFeatures_param"))
    config.startingCenterPosition.autoLocate = false;
 }
 
+config.tiles.push(selectedTile);//the last tile layer will be always selected by leaflet, so let's push it here
+
 var res = JSON.stringify(config);
 result.string(res);
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