Require login for unauthorised user

[alansemenov]

We need a simple login page (username & password fields, login button, simple validation) with redirect to the chat page after successful login. Use standardidprovider's login page for inspiration :)

[sigdestad]

? We are not supposed to build a new login. Just use the standard id provider to login.

[pmi]

I suggest we just show a simple page saying that login is required with a link to a standard id provider login ?

[alansemenov]

Let's start with just the redirect to standardidprovider login for unauthorised user. We should decide what we want to show on the intro page before we implement it.