Add a page for new users

[justkunz]

• validate the passwords
• encrypt/hash the passwords

[justkunz]

https

[justkunz]

Still left todo:

• login page (done)
• update the header to show a link to the profile & logout (done)
• logout page (done)
• password recovery
• user profile page
• encrypt the password (done)

[justkunz]

Still left:

• password recovery
• email verification