Test Vishnu Refresh

mock_versions.js

(function() {
  var oldAjax = $.ajax;
  
  $.ajax = function(url) {
    if (url === '/version.json') {
      return $.Deferred().resolve({"commit":"123","version":"v2"});
    } else {
      return oldAjax.apply($, arguments);
    }
  };
})();