Fix: add dependencies

demo/filebrowser-durandal-widget/lib/knockout/build/fragments/extern-pre.js

@@ -0,0 +1,8 @@
+(function(undefined){
+    // (0, eval)('this') is a robust way of getting a reference to the global object
+    // For details, see http://stackoverflow.com/questions/14119988/return-this-0-evalthis/14120023#14120023
+    var window = this || (0, eval)('this'),
+        document = window['document'],
+        navigator = window['navigator'],
+        jQueryInstance = window["jQuery"],
+        JSON = window["JSON"];