add css

git-svn-id: https://plugins.svn.wordpress.org/mockup/trunk@1056174 b8457f37-d9ea-0310-8a92-e5e31aec5664
Delete core file

git-svn-id: https://plugins.svn.wordpress.org/mockup/trunk@1056180 b8457f37-d9ea-0310-8a92-e5e31aec5664
Delete include

git-svn-id: https://plugins.svn.wordpress.org/mockup/trunk@1056194 b8457f37-d9ea-0310-8a92-e5e31aec5664