Move mailman back to http://csclub.uwaterloo.ca/mailman/

clubs/directory.xml

@@ -4,5 +4,5 @@
 
 <directory title="Clubs">
   <diritem title="Mailing Lists"
-    href="http://mailman.csclub.uwaterloo.ca/" />
+    href="/mailman/" />
 </directory>

clubs/index.xml

@@ -63,7 +63,7 @@
 
  <section title="Mailing lists we host" id="lists">
  <p>We also host a number of <a
- href="http://mailman.csclub.uwaterloo.ca/">mailing lists</a>
+ href="/mailman/">mailing lists</a>
  for various organisations, on-campus or in the community.  We provide
  archives of mailing list postings, as well as a web-based interface for
  administring lists.</p>