* the URL for the AJAX request is now set by using the `admin_url` function
* integrated plugin update message
* added missing Comments and Revisions meta boxes for supporting post types
* corrected some DocBlocks

git-svn-id: https://plugins.svn.wordpress.org/im8-box-hide/trunk@838422 b8457f37-d9ea-0310-8a92-e5e31aec5664