Add css to New Version 1.4

git-svn-id: https://plugins.svn.wordpress.org/import-tweets-as-posts/trunk@972964 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add css to New Version 1.4

git-svn-id: https://plugins.svn.wordpress.org/import-tweets-as-posts/trunk@972967 b8457f37-d9ea-0310-8a92-e5e31aec5664