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/designers/language-modifiers/language-modifier-capitalize.md

@@ -0,0 +1,49 @@
+# capitalize
+
+This is used to capitalize the first letter of all words in a variable.
+This is similar to the PHP [`ucwords()`](https://www.php.net/ucwords)
+function.
+
+## Basic usage
+```smarty
+{$myVar|capitalize}
+```
+
+## Parameters
+
+| Parameter | Type    | Required | Description                                                                                           |
+|-----------|---------|----------|-------------------------------------------------------------------------------------------------------|
+| 1         | boolean | No       | This determines whether or not words with digits will be uppercased                                   |
+| 2         | boolean | No       | This determines whether or not Capital letters within words should be lowercased, e.g. "aAa" to "Aaa" |
+
+
+## Examples
+
+```php
+<?php
+
+    $smarty->assign('articleTitle', 'next x-men film, x3, delayed.');
+
+```
+       
+
+Where the template is:
+
+```smarty
+    {$articleTitle}
+    {$articleTitle|capitalize}
+    {$articleTitle|capitalize:true}
+```
+       
+
+Will output:
+
+```
+    next x-men film, x3, delayed.
+    Next X-Men Film, x3, Delayed.
+    Next X-Men Film, X3, Delayed.
+```
+       
+
+See also [`lower`](language-modifier-lower.md) and
+[`upper`](language-modifier-upper.md)