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: http://core.svn.wordpress.org/trunk@24304 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use stripslashes() instead of wp_unslash() in ms-files.php to avoid formatting.php dependency. props devesine, fixes #24374.



git-svn-id: http://core.svn.wordpress.org/trunk@24305 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-beta3-24306.

git-svn-id: http://core.svn.wordpress.org/trunk@24306 1a063a9b-81f0-0310-95a4-ce76da25c4cd