Participants can now join during the warning period as well.

Added RaceDataSourceToXML.
RaceServer now create an XMLMessage when the race's RaceDataSource changes.
#story[1188]

racevisionGame/src/main/java/shared/enums/RoundingType.java

@@ -46,4 +46,19 @@ public enum RoundingType {
                 return null;
         }
     }
+
+    public static String getStringOf(RoundingType value) {
+        switch (value) {
+            case Port:
+                return "Port";
+            case Starboard:
+                return "Starboard";
+            case SP:
+                return "SP";
+            case PS:
+                return "PS";
+            default:
+                return null;
+        }
+    }
 }