condition will never evaluate to true

The condition should be either ```typeof module.cache  ===
'undefined'``` or  ```module.cache  === undefined```

src/modules/popup.js

@@ -265,7 +265,7 @@ $.fn.popup = function(parameters) {
         },
         restore: {
             conditions: function () {
-                if (typeof module.cache === undefined) {
+                if (module.cache === undefined) {
                     module.error(error.cache);
                     return false;
                 }

src/modules/transition.js

@@ -261,7 +261,7 @@ $.fn.transition = function() {
 
         restore: {
           conditions: function() {
-            if(typeof module.cache === undefined) {
+            if(module.cache === undefined) {
               module.error(error.cache);
               return false;
             }