I suggest to change the fixed text "Edit template permissions"
to text using gT().

In admin/userrighthandling.php line 124

$usersummary = "\n<form action='$scriptname' method='post'>\n\t
<div class='header'>".$clang->gT('Edit template permissions')."</div><p>
<table id=\"user-template-rights\" width='50%' border='0' style='margin:0 auto;'>\n<thead>\n\t<tr>\n\t<th colspan=\"2\" style=\"background-color:#000; color:#fff;\">\n"
. $clang->gT('Set templates that this user may access').': '.$_POST['user']."</th>\n\t</tr>\n";