Better display of publication queue

[pageer]

Currently, the "drafts" page just displays a list of draft entries in reverse chronological order with creation, edit, and auto-publish dates below. This makes it hard to see which, if any, entries are up for publication soon. It would be better to have a "publication queue" view that just lists which entries are set to be auto-published, sorted by auto-publish date.

While we're at it, it might also be useful to have a "publication" widget right on the draft page. Maybe something that allows you to view the preview modal and either publish the entry or set the auto-publish date without having to go into the editor.