More full-featured draft management

Can we squeeze this into 2.2? ;)

It'd be nice to have drafts be on a separate page for easy reference. I've seen plenty of sites with over 100 drafts (who am I to question their workflow?) and the edit page gets insane.

Here's my proposal:

1. Extend WP_Query to allow for post_status queries.
2. Put Drafts on their own tab where we still separate out your own drafts from those of others.
3. Like Manage -> Posts, make Manage -> Drafts searchable, monthable, and categoriable.

Patch accomplishes all of these, though will likely need some healthy tweaking.

Supercedes #4286.

rboren and I came up with what we think is a better idea.

1. Keep it on the same tab.
2. Combine Search, month, cat, and a new "what kind of post" (draft, future, private, normal, any) dropdown into one form.
3. Default the dropdowns to any.

Advantages:

1. more pivots, fewer tabs.
2. can do the same for pages.

for posts. all on one tab. pagination may need some work

3945b.diff - Just does posts, not pages.

1. Same tab
2. New post_status dropdown
3. default for drops is any

pagination tweaks

posts and pages

3945d.diff

Does pages too. Same as posts, but no separation between your drafts and others' drafts.

Both edit.php and edit-post-rows.php include navigation links, resulting in double sets of navigation.

edit-post-rows.php is included in an "if" block and in that block's inner "if" block. Looks like including it twice is possible. I couldn't get it to fall into both blocks though.

Would be nice if the h2 text updated to reflect the query.

Other than that looks good here.

posts, pages, h2 from query, i18n

3945e.diff (make sure to delete any edit-post-pages.php copies from earlier patches before applying this one.)

1. Navigation links fixed.
2. Pasts: query by search terms, post_status, month, category.
3. Pages: query by search terms, post_status.
4. H2 element reflects query and is i18nized.

(In [5575]) Better draft, private, and future post/page management from mdawaffe. fixes #3945

(In [5583]) Nomenclature changes. see #3945

(In [5587]) Post and page management filter additions from mdawaffe. see #3945