We are using: http://github.com/openid/php-openid
tiki-login_openid.php shouldn't offer to register if allowRegister: n
tiki-login_openid.php -> when offering "Associate OpenID with an existing Tikiwiki account", don't show the OpenID box again as it's illogical to add OpenID.
- tiki-login_openid.php module login_box shouldn't appear on this page
- openid_url icon is not working properly for all themes (strasa is OK, but fivealive is not)