Update Controller\Base

* Now fixed bug with status=200 on a 404-page
* 404-status is thrown and 404-pages are shown whenever a controller or controller/method is accessed that does not exist like e.g.,
    example.com/<controller exists>/<unknown method>
  or
    example.com/<unknown controller>
  or
    example.com/<module>/<unknwn controller>
  or
    example.com/<module>/<controller>/<unknown method>