Dev-Umgebung: Kompatibilität für PHP 8.3 + Smarty 4.5.6

- Smarty 4.1.1 → 4.5.6 (behebt dynamic property deprecations)
- Core-Klassen: #[\AllowDynamicProperties] für Admin_role, base, Config,
  Customer, Customer_group, CustomerGroups, Item, Structure, website
- website.class.php: counts[parent_id] initialisieren vor ++ (PHP 8.1)
- layout.class.php: HTTP_ACCEPT_LANGUAGE mit isset-Guard
- website_init.php: session_status()-Check vor session_start
- .htaccess: HTTPS-Redirect via X-Forwarded-Proto (statt SERVER_PORT)
- themes/easyshop_advanced/media/: Parent-Theme-Assets nachgezogen
- .gitignore: smarty.4.1.1.bak ausschließen

libs/smarty/docs/programmers/api-functions/api-get-config-vars.md

@@ -0,0 +1,37 @@
+getConfigVars()
+
+returns the given loaded config variable value
+
+Description
+===========
+
+array
+
+getConfigVars
+
+string
+
+varname
+
+If no parameter is given, an array of all loaded [config
+variables](#language.config.variables) is returned.
+
+
+    <?php
+
+    // get loaded config template var #foo#
+    $myVar = $smarty->getConfigVars('foo');
+
+    // get all loaded config template vars
+    $all_config_vars = $smarty->getConfigVars();
+
+    // take a look at them
+    print_r($all_config_vars);
+    ?>
+
+       
+
+See also [`clearConfig()`](#api.clear.config),
+[`{config_load}`](#language.function.config.load),
+[`configLoad()`](#api.config.load) and
+[`getTemplateVars()`](#api.get.template.vars).