RegionChooser: No need for KML header/footer.

src/eu/simstadt/regionchooser/RegionChooserBrowser.java

@@ -57,10 +57,8 @@ public JavaScriptFXBridge() {
 		}
 
 		public void refreshHulls() throws IOException {
-			String header = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + "<kml>\n" + "  <Document>\n";
-			String footer = "  </Document>\n" + "</kml>";
 			ConvexHullCalculator.extractHullsForEveryCityGML(repo,
-					(hullKML -> jsApp.call("addCityGmlHull", header + hullKML + footer)));
+					(hullKML -> jsApp.call("addCityGmlHull", hullKML)));
 		}
 
 		public void downloadRegion(String wktPolygon, String productName, JSObject novaFactoryLayer)