moves the rng into a common utils file

Author: the-pat

index.html

@@ -332,7 +332,7 @@ <h5 style="font-weight: bold">Credits</h5>
         var width = c.width;
         var height = c.height;
     </script>
-    <script src="utils/rand.js"></script>
+    <script src="utils.js"></script>
     <script src="algGP.js"></script>
     <script src="algGP_params.js"></script>
     <script src="algVines.js"></script>