User can be registered with space as a password

1. Open Sign up page (sign up for http://qa.jtalks.org/jcommune/)
2. Fill new correct username and e-mail
3. Set space into the password fields
4. Fill captcha
5 Click Sign up

Actual reslt: Message appears "A message with activation link was sent to the specified e-mail.". User appeared in DB. Confirmation mail hasn't come.
IMPACT: User can't be activated.
Note: As empty password is forbidden, password from only spaces should be forbidden too.