Fix/error on error view

The current vendor module ``LfjErrorLayout`` triggers an hard error on production because it uses ``$this->escape`` as escape view helper.
https://github.com/lorenzoferrarajr/LfjErrorLayout/blob/master/view/error/404.phtml#L35
The repo is outdated and useless, as we also have all error views under application.

Also this sets the default value for ``display_exceptions`` and ``display_not_found_reason`` to ``false`` and increase production security.