FIX REGRESSION issue_import: i18n gettext call in Ajax

i18n is included by the Controler class, but Ajax dos not use it...

[Tue Mar 11 23:16:53.694755 2014] [:error] [pid 16687] [client ::1:48707] PHP Fatal error:  Call to undefined function T_() in /var/www/html/codevtt/classes/command.class.php on line 59, referer: http://localhost/codevtt/import/import_issues.php