* Eliminates the bloated Revisions meta box in favor of 'Revisions: #' in the publish box.
* Adds ability to compare autosave to current post, when revisions are disabled.
* Makes autosaves stand out visually, including "Restore This Autosave".
Also:
* Adds missing capability check for restoring a revision.
* When no revision matches the post's current modified time, avoid marking an autosave as 'current'.
* Fixes wp_get_post_autosave() to return an autosave even when revisions are disabled.
* Add 'check_enabled' arg to wp_get_post_revisions(); false avoids the wp_revisions_enabled() check.
* Adds a responsive slider that is narrower for fewer versions. props markjaquith.
see #24804.
git-svn-id: https://develop.svn.wordpress.org/trunk@24790 602fd350-edb4-49c9-b593-d223f7449a82
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