to remove IRC link
open /include/templates/whatyouuse/header.php
and remove
PHP Code:
<li class="page_item"><a href="<?=$BASEURL;?>/irc.php"><font color="yellow"><?=$lang->global['irc'];?></font></a></li>
to make all ranks can upload
simply edit each rank to allow upload in "Tracker Settings --> Usergroups"