Merge pull request #1090 from openclassify/muammertop

#4092 missing images and icons on first install

addons/default/visiosoft/advs-module/src/AdvsModulePlugin.php

@@ -115,6 +115,12 @@ class AdvsModulePlugin extends Plugin
                     );
                 }
             ),
+	        new \Twig_SimpleFunction(
+	        	'is_module_enabled',
+		        function ($slug) {
+	        		return app(AdvModel::class)->is_enabled($slug);
+		        }
+	        )
         ];
     }