add startLayer attribute

home.json

@@ -75,9 +75,15 @@
          "height":20,
          "id":10,
          "name":"start",
-         "opacity":0,
+         "opacity":1,
+         "properties":[
+                {
+                 "name":"startLayer",
+                 "type":"bool",
+                 "value":true
+                }],
          "type":"tilelayer",
-         "visible":true,
+         "visible":false,
          "width":20,
          "x":0,
          "y":0