Warnings in wp-admin/user-new

[PeteMall]

• NOTICE: wp-admin/user-new.php:231 - Undefined variable: new_user_email
• Notice: wp-admin/user-new.php:20 - Undefined variable: s (PHP 5.3.2 specific)
• Notice: Undefined property: stdClass::$blogid in wp-includes/ms-functions.php:1390 (add a user without sending mail)

[wpdavis]

The add user page needs a little bit of work to make it usable — working on a patch right now.

[wpdavis]

Patch attached.
Summary:
*removed the anchors, as the errors display above them, which is potentially confusing to the user.
*set the vars for adding existing users to blogs to false as default in order to avoid stepping on the other form's toes, filling in the wrong fields and errors when submitting the new user form
*made sure noconfirmation stays checked

[wpdavis]

Removed the existing_user_ variables, as they actually aren't needed

[ocean90]

Some other warnings.

[ryan]

(In [16518]) Fixes for user-new.php. Props wpdavis. see #15456

[wpdavis]

Fixes sprintf to use single quotes, makes sure the user is submitting the multisite form before trying to add a user to the blog to avoid errors.

[wpdavis]

Above patch should fix both the errors ocean90 was getting.

[ryan]

(In [16527]) Notice fixes for user-new.php. Props wpdavis. see #15456

[ocean90]

See #15725