Autosave: properly set autosaveLast when TinyMCE is the default editor. Prevents firing autosave when there are no changes. See #23220

git-svn-id: http://core.svn.wordpress.org/trunk@24431 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-beta3-24432.

git-svn-id: http://core.svn.wordpress.org/trunk@24432 1a063a9b-81f0-0310-95a4-ce76da25c4cd