haven't been able to create a gui for mass edit yet

git-svn-id: https://plugins.svn.wordpress.org/media-credit/trunk@964741 b8457f37-d9ea-0310-8a92-e5e31aec5664
search.php was obsolete (and empty)

git-svn-id: https://plugins.svn.wordpress.org/media-credit/trunk@964742 b8457f37-d9ea-0310-8a92-e5e31aec5664