Wifi CP fixes: Apache listen and servername

Use the IP address for a Servername and make sure we listen on port 81

modules/rhizo_base/files/ports.conf

@@ -0,0 +1,16 @@
+# If you just change the port or add more ports here, you will likely also
+# have to change the VirtualHost statement in
+# /etc/apache2/sites-enabled/000-default.conf
+
+Listen 80
+Listen 81
+
+<IfModule ssl_module>
+	Listen 443
+</IfModule>
+
+<IfModule mod_gnutls.c>
+	Listen 443
+</IfModule>
+
+# vim: syntax=apache ts=4 sw=4 sts=4 sr noet