Move wp_redirect calls to the end of the switch in users.php. Fix unrelated...

Move wp_redirect calls to the end of the switch in users.php. Fix unrelated bug where the user's cap should be check, rather than their role's cap. see #16166.

git-svn-id: https://core.svn.wordpress.org/trunk@17275 1a063a9b-81f0-0310-95a4-ce76da25c4cd