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-assign.md

@@ -0,0 +1,84 @@
+assign()
+
+assign variables/objects to the templates
+
+Description
+===========
+
+void
+
+assign
+
+mixed
+
+var
+
+void
+
+assign
+
+string
+
+varname
+
+mixed
+
+var
+
+bool
+
+nocache
+
+You can explicitly pass name/value pairs, or associative arrays
+containing the name/value pairs.
+
+If you pass the optional third `nocache` parameter of TRUE, the variable
+is assigned as nocache variable. See
+[`Cacheability of Variables`](#cacheability.variables) for details.
+
+> **Note**
+>
+> When you assign/register objects to templates, be sure that all
+> properties and methods accessed from the template are for presentation
+> purposes only. It is very easy to inject application logic through
+> objects, and this leads to poor designs that are difficult to manage.
+> See the Best Practices section of the Smarty website.
+
+
+    <?php
+    // passing name/value pairs
+    $smarty->assign('Name', 'Fred');
+    $smarty->assign('Address', $address);
+
+    // passing an associative array
+    $smarty->assign(array('city' => 'Lincoln', 'state' => 'Nebraska'));
+
+    // passing an array
+    $myArray = array('no' => 10, 'label' => 'Peanuts');
+    $smarty->assign('foo',$myArray);
+
+    // passing a row from a database (eg adodb)
+    $sql = 'select id, name, email from contacts where contact ='.$id;
+    $smarty->assign('contact', $db->getRow($sql));
+    ?>
+
+These are accessed in the template with
+
+
+    {* note the vars are case sensitive like php *}
+    {$Name}
+    {$Address}
+    {$city}
+    {$state}
+
+    {$foo.no}, {$foo.label}
+    {$contact.id}, {$contact.name},{$contact.email}
+
+To access more complex array assignments see
+[`{foreach}`](#language.function.foreach) and
+[`{section}`](#language.function.section)
+
+See also [`assignByRef()`](#api.assign.by.ref),
+[`getTemplateVars()`](#api.get.template.vars),
+[`clearAssign()`](#api.clear.assign), [`append()`](#api.append) and
+[`{assign}`](#language.function.assign)