This commit updates the configuration for *pyrocufflink.net* to use the
wildcard certificate managed by *lego* instead of an unique certificate
managed by *certbot*.
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
