Request JS

Changes

--- appengine/js/main.js 28adff32beb29cda42835d7a594bb53d0ca48639

+++ appengine/js/main.js 89a63ca2c9d937104afb29e2a833f73c9f00081b

@@ -8,6 +8,7 @@

+var request; request_in_progress = false;

@@ -46,6 +47,8 @@

+  request_in_progress = false;

+  

@@ -231,7 +234,11 @@

-  $.ajax({

+  if(request_in_progress){

+    request.abort();

+  }

+  request_in_progress = true;

+  request = $.ajax({