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-clear-cache.md

@@ -0,0 +1,60 @@
+clearCache()
+
+clears the cache for a specific template
+
+Description
+===========
+
+void
+
+clearCache
+
+string
+
+template
+
+string
+
+cache\_id
+
+string
+
+compile\_id
+
+int
+
+expire\_time
+
+-   If you have [multiple caches](#caching.multiple.caches) for a
+    template, you can clear a specific cache by supplying the `cache_id`
+    as the second parameter.
+
+-   You can also pass a [`$compile_id`](#variable.compile.id) as a third
+    parameter. You can [group templates together](#caching.groups) so
+    they can be removed as a group, see the [caching section](#caching)
+    for more information.
+
+-   As an optional fourth parameter, you can supply a minimum age in
+    seconds the cache file must be before it will get cleared.
+
+    > **Note**
+    >
+    > Since Smarty version 3.1.14 it is possible to delete cache files
+    > by their individual expiration time at creation by passing
+    > constant SMARTY::CLEAR\_EXPIRED as fourth parameter.
+
+<!-- -->
+
+
+    <?php
+    // clear the cache for a template
+    $smarty->clearCache('index.tpl');
+
+    // clear the cache for a particular cache id in an multiple-cache template
+    $smarty->clearCache('index.tpl', 'MY_CACHE_ID');
+    ?>
+
+       
+
+See also [`clearAllCache()`](#api.clear.all.cache) and
+[`caching`](#caching) section.