Andrew Ozz 2700b71b35 Post locks:
- Change from IDs to classes for the notification-dialog divs so they can be reused.
- Do not check post locks if the dialog's html is not present.
- Do not check post locks if there is only one user on a single site install.
See #23697.

git-svn-id: https://develop.svn.wordpress.org/trunk@24304 602fd350-edb4-49c9-b593-d223f7449a82
2013-05-20 19:36:29 +00:00
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2013-05-20 19:36:29 +00:00