Website account: confirmation and character overview

Anyone registering now receives a confirmation e-mail. Only after clicking the link in it does the website login work. Existing accounts are unaffected and stay signed in.

Important: this concerns the website only. The game itself checks none of it — logging in and playing works exactly as before.

The account area also gained a character overview: name, level, class and Penya of every character on an account at a glance. The password form now sits behind its own panel so nobody touches it by accident.