request an extension by 15 June 2014 ... this according to Miguel Andres's answer on
[this thread](http://stackoverflow.com/questions/23773275/changed-domain-error-openid-auth-request-contains-an-unregistered-domain).
-Google will not work as an OpenID provided for any ikiwiki set up since that time.
+Google will not work as an OpenID provider for any ikiwiki set up since that time.
So, probably that Google option shouldn't be in the OpenID selector; maybe there
should be an option: default _off_, can be turned _on_ for an established ikiwiki