At first, thanks for your efforts in good test managmnet software!
I have translated system to russian - the file string.txt has ANSI coding (in my case windows-1251). If I define in config.inc.php
define ('TL_TPL_CHARSET', 'windows-1251'), that the localization interface of system looks good. But the new added data with cyrillic (User Name, Test Cases etc) are not displayed (simply blank

If i decode a file string.txt in Unicode (UTF8) and define in config.inc.php define('TL_TPL_CHARSET', 'UTF-8'), Cyrillic names will be kept normally, but the localization interface is shown in the wrong coding.
Question - how it is possible to make high-grade support UTF-8?
Version TestLink - 1.6.2
Thanks for attention!