Handle WebID without information at sign in

[csarven]

At minimum a WebID is an Agent, and maybe has a name, avatar etc..

If no statement about the WebID is found, the user is currently signed in as "anonymous" (and gets a fake/fun temporary name in the interface).

That can happen if really there is no WebID or the user made a typo in their URI. The assumption here is that it was a typo because someone that wants to be anonymous wouldn't go through the sign-in process.

The UI should warn the user about the fact that no WebID was found and whether they'd like to try updating their input. This would prevent the sign in from going through. I suppose there is no useful reason to sign in as anonymous in this case.. is there?

[eduardoinnorway]

Design patterns needed to inorm about "warning, error, info, success", alerts for example