Added Membership link

includes/account_stuff.php

@@ -260,7 +260,7 @@ function hideall() {
 ?>
       </div>
     </div>
-  <div id="siteInfo"><a href="account.php?id=37"><?=_("About Us")?></a> | <a href="account.php?id=38"><?=_("Donations")?></a> |
+  <div id="siteInfo"><a href="account.php?id=37"><?=_("About Us")?></a> | <a href="account.php?id=38"><?=_("Donations")?></a> | <a href="http://wiki.cacert.org/wiki/CAcertIncorporated"><?=_("Association Membership")?></a> |
 	<a href="account.php?id=39"><?=_("Privacy Policy")?></a> | <a href="account.php?id=40"><?=_("Contact Us")?></a>
 		| &copy;2002-2006 by CAcert</div>
 </div>