added twitter via field, new look for right end in expanded mode, bug fixes

git-svn-id: https://plugins.svn.wordpress.org/social-butterfly/trunk@1008232 b8457f37-d9ea-0310-8a92-e5e31aec5664
css for new look for right end in expanded mode

git-svn-id: https://plugins.svn.wordpress.org/social-butterfly/trunk@1008233 b8457f37-d9ea-0310-8a92-e5e31aec5664