Editor: preserve the textarea content when saving, wpautop is not used and TinyMCE is hidden. Props WraithKenny, fixes #23743

git-svn-id: http://core.svn.wordpress.org/trunk@23745 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-alpha-23746. TinyMCE updated.

git-svn-id: http://core.svn.wordpress.org/trunk@23746 1a063a9b-81f0-0310-95a4-ce76da25c4cd