First working version of new screen to list and select races for event

java/org.json.simple/src/org/json/simple/JSONValue.java

@@ -8,6 +8,7 @@ import java.io.IOException;
 import java.io.Reader;
 import java.io.StringReader;
 import java.io.Writer;
+import java.net.URL;
 import java.util.List;
 import java.util.Map;
 
@@ -152,6 +153,13 @@ public class JSONValue {
             return;
 		}
 		
+		if (value instanceof URL) {
+            out.write('\"');
+			out.write(value.toString());
+            out.write('\"');
+			return;
+		}
+		
 		out.write(value.toString());
 	}