fix(markers): Solved a bug related with the default icon position, th…

…anks to @Jespersm75 for reporting here:

#607

src/services/leafletMarkersHelpers.js

@@ -41,21 +41,19 @@ angular.module("leaflet-directive").factory('leafletMarkersHelpers', function ($
         }
 
         var base64icon = "data:image/png;base64,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";
-
         var base64shadow = "data:image/png;base64,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";
 
-        if (!isDefined(iconData)) {
+        if (!isDefined(iconData) || !isDefined(iconData.iconUrl)) {
             return new L.Icon.Default({
                 iconUrl: base64icon,
-                shadowUrl: base64shadow
+                shadowUrl: base64shadow,
+                iconSize: [25, 41],
+                iconAnchor: [12, 41],
+                popupAnchor: [1, -34],
+                shadowSize: [41, 41]
             });
         }
 
-        if (!isDefined(iconData.iconUrl)) {
-            iconData.iconUrl = base64icon;
-            iconData.shadowUrl = base64shadow;
-        }
-
         return new L.Icon(iconData);
     };