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-variables/index.md

@@ -0,0 +1,36 @@
+# Variables
+
+Smarty has several types of variables. The type of the
+variable depends on what symbol it is prefixed or enclosed within.
+
+- [Variables assigned from PHP](language-assigned-variables.md)
+- [Variables loaded from config files](language-config-variables.md)
+- [{$smarty} reserved variable](language-variables-smarty.md)
+
+Variables in Smarty can be either displayed directly or used as
+arguments for [functions](../language-basic-syntax/language-syntax-functions.md),
+[attributes](../language-basic-syntax/language-syntax-attributes.md) and
+[modifiers](../language-modifiers/index.md), inside conditional expressions, etc.
+To print a variable, simply enclose it in the
+[delimiters](../../programmers/api-variables/variable-left-delimiter.md) so that it is the only thing
+contained between them.
+
+```smarty
+{$Name}
+
+{$product.part_no} <b>{$product.description}</b>
+
+{$Contacts[row].Phone}
+
+<body bgcolor="{#bgcolor#}">
+```
+
+## Scopes
+You can assign variables to specific [variable scopes](language-variable-scopes.md).
+
+      
+> **Note**
+>
+> An easy way to examine assigned Smarty variables is with the
+> [debugging console](../chapter-debugging-console.md).
+