anomyous tasks should go straight to Close because there is no one to close the task from Finished
anonymous tasks can be deleted by the asignee at any time
let anonymous users claim the tasks they create after logging in

This will require a database schema update a la:

echo "ALTER TABLE cotaskme_task ADD anonymous_claim_id text; CREATE INDEX anonymous_claim_id_idx ON cotaskme_task (anonymous_claim_id);" | sqlite3 db/database.sqlite3

Gotta use south soon...