When adding meta boxes, it's possible add them to the links page..
$page
(string) (required) The type of Write screen on which to show the edit screen section ('post', 'page', 'link', or 'custom_post_type' where custom_post_type is the custom post type slug)
Default: None
http://codex.wordpress.org/Function_Reference/add_meta_box
Is this an easy addition to the plugin?
