changed plugin name to make more sense

git-svn-id: https://plugins.svn.wordpress.org/media-files-widget/trunk@994697 b8457f37-d9ea-0310-8a92-e5e31aec5664
attempt two to change name

git-svn-id: https://plugins.svn.wordpress.org/media-files-widget/trunk@994699 b8457f37-d9ea-0310-8a92-e5e31aec5664