More dash updates.
 * Shuffle around some pixels.
 * Rename some things that weren't caught in [26220].
 * Revert default-widgets.php change from [26144].
props lessbloat.
see #25824.

Built from https://develop.svn.wordpress.org/trunk@26230


git-svn-id: http://core.svn.wordpress.org/trunk@26137 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert these action blocks in wp-admin/post.php to their pre-[26144] state.

see #25824.

Built from https://develop.svn.wordpress.org/trunk@26231


git-svn-id: http://core.svn.wordpress.org/trunk@26138 1a063a9b-81f0-0310-95a4-ce76da25c4cd