Fix for issues 567 and also remove multiple calls to beef.browser.hasJava() from /beef/core/main/client/net/local.js

extensions/demos/html/checkJava.java

@@ -0,0 +1,19 @@
+import java.io.*;  
+import java.util.*;
+import java.net.*;
+import java.applet.*;
+
+// Keith Lee
+// Twitter: @keith55
+// http://milo2012.wordpress.com
+// keith.lee2012[at]gmail.com
+
+public class checkJava extends Applet{  
+ 	public static int results = 0;
+	public void init() {
+	}
+        public int getInfo() {
+		results = 1;
+		return results;
+	}
+}