Manually apply PR #1594 (fixing phpdoc page-level generation/warnings)
Also partially fixes issue #1295, fixes inconsistencies in some page-level docblocks and adds include checks in language files.
diff --git a/system/language/english/form_validation_lang.php b/system/language/english/form_validation_lang.php
index 6ff0cc2..52ca21f 100644
--- a/system/language/english/form_validation_lang.php
+++ b/system/language/english/form_validation_lang.php
@@ -24,6 +24,7 @@
* @since Version 1.0
* @filesource
*/
+defined('BASEPATH') OR exit('No direct script access allowed');
$lang['required'] = 'The %s field is required.';
$lang['isset'] = 'The %s field must have a value.';