* Added 'Access-Control-Allow' headers to filter.php's before() filter to add some extra security via CORS
* Added an App::missing() as a fallback route that returns a 404 when no routes are called
* Added a a Config entry 'NOTE_SITE' to the OneTimeNoteServiceProvider to set a URL for CORS
* Changed the Note URL that is generated in controller to utilize the Config 'NOTE_SITE'
* Added exception handling with the decryption of the note message goes belly up