Further improve various Phame UI things

Summary:
  - Better icons and action order.
  - "Move Post" action.
  - (Bugfix) Allow multiple blogs to be set to not having custom domains.
  - Make "Write Post" skip the "select a blog" step when coming from a blog view.
  - Sort blog list on "Write Post".
  - Show messages when a post is a draft or not on a blog.

Test Plan: Created posts, blogs, moved posts, preview/live'd posts, etc.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1373

Differential Revision: https://secure.phabricator.com/D3708

src/applications/phame/controller/blog/PhameBlogEditController.php

@@ -80,7 +80,7 @@ final class PhameBlogEditController
 
       $blog->setName($name);
       $blog->setDescription($description);
-      $blog->setDomain($custom_domain);
+      $blog->setDomain(nonempty($custom_domain, null));
       $blog->setSkin($skin);
 
       if (!empty($custom_domain)) {