Add possibility for users to create an account
In addition to previous comment and signup via OpenID it should be possible to implement the following flow:
Provide an HTML-form to submit name, username, email and password
After a POST the server creates a temporary token and sends it in an email as link to check whether the address exists
As soon as the token is acknowledged a user is created
After successful creation of the user, a context is created
Finally the home context in the user info is set
Requires support for HTML signup form, internal token cache, SMTP configuration.
Should be based on ExistingUserRedirectAuthenticator. It's probably enough to override handleUser(). Check whether user exists, and if not, create user.