Revert [16292], admin_notices for non-network non-user only. all_admin_notices...

Revert [16292], admin_notices for non-network non-user only. all_admin_notices for all. fixes #14696.

git-svn-id: https://core.svn.wordpress.org/trunk@17016 1a063a9b-81f0-0310-95a4-ce76da25c4cd