Merge pull request #27322 from frederic34/cleanboxescode

clean code of boxes

htdocs/core/boxes/modules_boxes.php

@@ -38,6 +38,21 @@ class ModeleBoxes // Can't be abtract as it is instantiated to build "empty" box
 	 */
 	public $db;
 
+	/**
+	 * @var string param
+	 */
+	public $param;
+
+	/**
+	 * @var array box info heads
+	 */
+	public $info_box_head = array();
+
+	/**
+	 * @var array box info content
+	 */
+	public $info_box_contents = array();
+
 	/**
 	 * @var string Error message
 	 */