Made APPLICATION_ENV control detail level of error output; added detailed...

Made APPLICATION_ENV control detail level of error output; added detailed error message to 404 page.

module/VuFind/config/module.config.php

@@ -27,9 +27,8 @@ $config = array(
         ),
     ),
     'view_manager' => array(
-        'display_not_found_reason' => true,
-        'display_exceptions'       => true,
-        'doctype'                  => 'HTML5',
+        'display_not_found_reason' => APPLICATION_ENV == 'development',
+        'display_exceptions'       => APPLICATION_ENV == 'development',
         'not_found_template'       => 'error/404',
         'exception_template'       => 'error/index',
         'template_path_stack'      => array(),

themes/vufind/root/templates/error/404.phtml

 <h1><?=$this->transEsc('An error has occurred')?></h1>
-<h2><?=$this->transEsc($this->message)?></h2>
\ No newline at end of file
+<h2><?=$this->transEsc($this->message)?></h2>
+<? if (isset($this->reason) && $this->reason): ?><b><?=$this->transEsc('Message')?>:</b> <?=$this->transEsc($this->reason)?><? endif; ?>