websites: Add role for pyrocufflink.net site

The *websites/pyrocufflink.net* role configures the public web server to
host *pyrocufflink.net*. This site has two functions:

* It redirects `/` to http://dustin.hatch.name/
* It proxies user home directories (i.e. /~dustin/) to the file server

roles/websites/pyrocufflink.net/templates/pyrocufflink.httpd.conf.j2

@@ -0,0 +1,15 @@
+# vim: set sw=4 ts=4 sts=4 et :
+
+<VirtualHost _default_:443>
+    ServerName pyrocufflink.net
+    Include conf.d/ssl.include
+    SSLCertificateFile {{ apache_ssl_certificate }}
+    SSLCertificateKeyFile {{ apache_ssl_certificate_key }}
+
+    ProxyRequests Off
+    LogLevel rewrite:trace8
+    RewriteEngine On
+    RewriteRule ^/(~[^/]+)(/.*)?$ {{ userdir_proxy_backend }}/$1$2 [P]
+    RewriteRule ^/$ http://dustin.hatch.name/
+    ProxyPassReverse / {{ userdir_proxy_backend }}/
+</VirtualHost>