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.


git-svn-id: https://develop.svn.wordpress.org/trunk@26230 602fd350-edb4-49c9-b593-d223f7449a82
Revert these action blocks in wp-admin/post.php to their pre-[26144] state.

see #25824.


git-svn-id: https://develop.svn.wordpress.org/trunk@26231 602fd350-edb4-49c9-b593-d223f7449a82