added custom layout to panles, created thematique anchor links menu

sites/all/themes/figureslibres/clameurs/layouts/column/column.inc

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+<?php
+
+/**
+ * @file
+ * Implementation of hook_panels_layouts().
+ */
+// Plugin definition.
+$plugin = array(
+  'title' => t('Column'),
+  'category' => t('Columns: 1'),
+  'icon' => 'column.png',
+  'theme' => 'panels_column',
+  'css' => 'column.css',
+  'regions' => array('middle' => t('Middle column')),
+);

sites/all/themes/figureslibres/clameurs/layouts/column/panels-column.tpl.php

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+<?php
+/**
+ * @file
+ * Template for a 3 column panel layout.
+ *
+ * This template provides a very simple "one column" panel display layout.
+ *
+ * Variables:
+ * - $id: An optional CSS id to use for the layout.
+ * - $content: An array of content, each item in the array is keyed to one
+ *   panel of the layout. This layout supports the following sections:
+ *   $content['middle']: The only panel in the layout.
+ */
+?>
+<?php print $content['middle']; ?>