Merge pull request #461 from pi-hole/notiec

Add a note about where the default whitelist entries come from, and w…

list.php

@@ -46,6 +46,7 @@ function getFullName() {
 </div>
 <?php if($list === "white") { ?>
     <p>Note: Whitelisting a subdomain of a wildcard blocked domain is not possible.</p>
+    <p>Some of the domains shown below are domains of the adlists sources, which are automatically added in order to prevent adlists being able to blacklist each other. See <a href="https://github.com/pi-hole/pi-hole/blob/master/adlists.default" target="_blank">here</a> for the default set of adlists.</p>
 <?php } ?>
 
 <!-- Alerts -->