ajout de la partie slam dans le dossier web

ap23/web/doku/inc/Menu/Item/Back.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace dokuwiki\Menu\Item;
+
+/**
+ * Class Back
+ *
+ * Navigates back up one namepspace. This is currently not used in any menu. Templates
+ * would need to add this item manually.
+ */
+class Back extends AbstractItem {
+
+    /** @inheritdoc */
+    public function __construct() {
+        global $ID;
+        parent::__construct();
+
+        $parent = tpl_getparent($ID);
+        if(!$parent) {
+            throw new \RuntimeException("No parent for back action");
+        }
+
+        $this->id = $parent;
+        $this->params = array('do' => '');
+        $this->accesskey = 'b';
+        $this->svg = DOKU_INC . 'lib/images/menu/12-back_arrow-left.svg';
+    }
+
+}