Show notice that whitelisting of wildcard blocking is not possible

list.php

@@ -39,6 +39,8 @@ function getFullName() {
     }
     </span>
 </div>
+<?php if($list === "white") { ?>
+<p>Note that whitelisting domains which are blocked using the wildcard method won't work.</p><?php } ?>
 
 <!-- Alerts -->
 <div id="alInfo" class="alert alert-info alert-dismissible fade in" role="alert" hidden="true">