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/calendar_lang.php b/system/language/english/calendar_lang.php
index a70a564..288eb91 100644
--- a/system/language/english/calendar_lang.php
+++ b/system/language/english/calendar_lang.php
@@ -24,6 +24,7 @@
* @since Version 1.0
* @filesource
*/
+defined('BASEPATH') OR exit('No direct script access allowed');
$lang['cal_su'] = 'Su';
$lang['cal_mo'] = 'Mo';