Re-enabled source id allocator check.

Re-enabled rotation of map at startup.
Changed race.xml schema so that yacht elements aren't required inside the participants element.
#story[1185]

racevisionGame/src/main/java/shared/xml/Race/XMLParticipants.java

@@ -50,7 +50,7 @@ import javax.xml.bind.annotation.XmlType;
 })
 public class XMLParticipants {
 
-    @XmlElement(name = "Yacht", required = true)
+    @XmlElement(name = "Yacht", required = false)
     protected List<XMLYacht> yacht;
 
     /**

racevisionGame/src/main/java/shared/xml/XMLUtilities.java

@@ -49,7 +49,7 @@ public class XMLUtilities {
         return xmlToClass(document, schemaURL, c);
     }
 
-    public static Object xmlToClass(String xml, URL schemaURL, Class c) throws ParserConfigurationException, IOException, SAXException, JAXBException {
+    public static <T> T xmlToClass(String xml, URL schemaURL, Class<T> c) throws ParserConfigurationException, IOException, SAXException, JAXBException {
         DocumentBuilder parser = DocumentBuilderFactory.newInstance().newDocumentBuilder();
         Document document = parser.parse(new InputSource(new ByteArrayInputStream(xml.getBytes("utf-8"))));