You can click on the Google or Yahoo buttons to sign-in with these identity providers,
or you just type your identity uri and click on the little login button.
We are not always interested in cwuri but it is mandatory.
Target patch was folded, but this is indeed "done" (for some value hereof).
Ticket #3261772 - latest update on 2014/05/27, created on 2013/10/29 by Aurelien Campeas