Make the value of "sub" a string, per draft RFC.

Section 4.1.2 of the draft RFC (v. 32) says - The "sub" value is a case-sensitive string containing a StringOrURI value.

Author: tlynn

js/app.js

@@ -202,7 +202,7 @@
 
   loadFromStorage(function (jwt) {
     tokenEditor.setValue(
-      jwt || 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOjEyMzQ1Njc4OTAsIm5hbWUiOiJKb2huIERvZSIsImFkbWluIjp0cnVlfQ.eoaDVGTClRdfxUZXiPs3f8FmJDkDE_VCQFXqKxpLsts'
+      jwt || 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.eoaDVGTClRdfxUZXiPs3f8FmJDkDE_VCQFXqKxpLsts'
     );
 
   });