Heartbeat: rename some vars/args to make them more intuitive, don't set user_id on every request, see #23216

git-svn-id: http://core.svn.wordpress.org/trunk@24406 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-beta3-24407.

git-svn-id: http://core.svn.wordpress.org/trunk@24407 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Post locks:
- When a post is locked, ensure the 'Go back' button doesn't reload the same screen. If no referrer, change the button from 'Go back' to 'Go to All Posts'/'Go to All Pages' etc.
- Remove restriction on checking locks only for posts.
See #23697.



git-svn-id: http://core.svn.wordpress.org/trunk@24408 1a063a9b-81f0-0310-95a4-ce76da25c4cd