dev #142681 add expert mode to front admin menu

FEATURES/142681

+        '142681' =>
+            ['Label' => $this->_('Administration : pouvoir activer le mode expert'),
+             'Desc' => '',
+             'Image' => '',
+             'Video' => '',
+             'Category' => '',
+             'Right' => function($feature_description, $user) {return true;},
+             'Wiki' => '',
+             'Test' => '',
+             'Date' => '2022-01-17'],
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