Update changelog

lhc_web/doc/CHANGELOG.txt

@@ -1,11 +1,15 @@
 4.45v
 
 1. E-Mail conversations search will now use `from_address_clean` attribute which is a new attribute without dot's in the name.
+2. If whisper message is send it won't influence arrows in the dashboard widget or auto responder flow.
+3. Chat print window was improved.
 
 There is few queries to populate that field in the update file.
 execute doc/update_db/update_315.sql for update
 
-You can also just run this file after you have updated official version. `php cron.php -s site_admin -c cron/update/update_445`
+You can also just run this file after you have updated official version. You do not have to run this script if you are not using mail module.
+
+`php cron.php -s site_admin -c cron/update/update_445`
 
 4.44v