Add a configuration option to indicate we are running in production.

This can be used by templates to load resources in different ways, either optimized for the developer or for a production environment.

config-templates/config.php

@@ -797,6 +797,17 @@ $config = array(
      */
     'template.auto_reload' => false,
 
+    /*
+     * Set this option to true to indicate that your installation of SimpleSAMLphp
+     * is running in a production environment. This will affect the way resources
+     * are used, offering an optimized version when running in production, and an
+     * easy-to-debug one when not. Set it to false when you are testing or
+     * developing the software.
+     *
+     * Defaults to true.
+     */
+    'production' => true,
+
 
 
     /*********************

lib/SimpleSAML/XHTML/Template.php

@@ -247,6 +247,7 @@ class SimpleSAML_XHTML_Template
         }
         $twig->addGlobal('queryParams', $queryParams);
         $twig->addGlobal('templateId', str_replace('.twig', '', $this->normalizeTemplateName($this->template)));
+        $twig->addGlobal('isProduction', $this->configuration->getBoolean('production', true));
 
         // add a filter for translations out of arrays
         $twig->addFilter(