New admin interface; disable admin notice; customise the title text; bug fixes;

git-svn-id: https://plugins.svn.wordpress.org/add-to-feed/trunk@924636 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated contributor

git-svn-id: https://plugins.svn.wordpress.org/add-to-feed/trunk@924638 b8457f37-d9ea-0310-8a92-e5e31aec5664