Feature request: count items per page option

[CryptorClub]

Hello. Would be great to choose items per page on search page like: /index.php/site_admin/chat/list

I see static value 20 in such files: lhc_web/modules/lhform/collected.php lhc_web/modules/lhfile/attatchfilemail.php lhc_web/modules/lhuser/userlist.php

$pages->setItemsPerPage(20);

Would be great to choose this count.