RegionChooser: No need for offline tiles. simstadt.jar 15MB -> 3.7MB.

src/eu/simstadt/regionchooser/website/script/simstadt_openlayers.js

@@ -8,12 +8,6 @@ proj4.defs("EPSG:31467", "+proj=tmerc +lat_0=0 +lon_0=9 +k=1 +x_0=3500000 +y_0=0
 
 var wgs84Sphere = new ol.Sphere(6378137);
 
-var offline_osm_layer = new ol.layer.Tile({
-	source: new ol.source.OSM({
-		url : 'data/tiles/{z}/{x}/{y}.png'
-	})
-});
-
 var osm_layer = new ol.layer.Tile({
 	source: new ol.source.OSM()
 });
@@ -82,7 +76,7 @@ var novafactory_layer = new ol.layer.Vector({
 
 var map = new ol.Map({
 	target : 'map',
-	layers : [ offline_osm_layer, osm_layer, kml_layer, novafactory_layer, intersections_layer ],
+	layers : [ osm_layer, kml_layer, novafactory_layer, intersections_layer ],
 	interactions : ol.interaction.defaults({
 		keyboard : true
 	})