add feature file for pinterest mode

FEATURES/39361

+        '39361' =>
+            ['Label' => $this->_('Affichage des articles en mode mur'),
+             'Desc' => $this->_('Bokeh peut afficher les articles sous forme de mur'),
+             'Image' => '',
+             'Video' => '',
+             'Category' => '',
+             'Right' => function($feature_description, $user) {return true;},
+             'Wiki' => 'http://wiki.bokeh-library-portal.org/index.php?title=Liste_d%27articles_en_mode_mur',
+             'Test' => '',
+             'Date' => '2017-09-22'],
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