Bulk update screen to edit Manual Posts

[ajaydsouza]

Create a new screen or add columns to the main posts edit.php screen where a user can manually enter a set of related posts for the plugin.

[pgrayuser9216]

Create two “bulk actions” to:

1. Disable Related Posts display
2. Exclude this post from the related posts list

Modify the bulk edit and quick edit forms to provide these options as well