Merge branch 'jameskopacz-patch-259' of https://github.com/jameskopacz/freecodecamp into ux-improvements

public/js/main.js

@@ -154,6 +154,10 @@ $(document).ready(function() {
     });
 
     var upvoteHandler = function () {
+        if (typeof user == "undefined" || !user) {
+            window.location.href = '/signin';
+            return;
+        }
         var _id = storyId;
         $('#upvote').unbind('click');
         var alreadyUpvoted = false;