Script: Fix missing exit + update documentation

tests/scripts/delete_deleted_exercises_with_questions.php

@@ -1,6 +1,10 @@
 <?php
 /* For licensing terms, see /license.txt */
 
+/**
+ * This script cleans up tests and questions that were deleted from the
+ * platform interface but were left in the database for recovery purposes.
+ */
 exit;
 
 require_once __DIR__ . '/../../main/inc/global.inc.php';

tests/scripts/delete_duplicate_documents.php

@@ -1,8 +1,7 @@
 <?php
 /* For licensing terms, see /license.txt */
 /**
- * This script removes duplicated tests and questions created
- * through something gone wrong in the course backup/copy process.
+ * This script removes duplicated documents.
  * It identifies duplicate documents by title, path and size, and
  * makes sure no usage is associated with the duplicated document, and
  * that the duplicated document is not used in a learning path.

tests/scripts/find_duplicate_documents_by_md5.php

@@ -15,7 +15,7 @@
  *
  * @author Yannick Warnier <yannick.warnier@beeznest.com>
  */
-//exit; //remove this line to execute from the command line
+exit; //remove this line to execute from the command line
 
 use ChamiloSession as Session;