added new state summary section for the dashboard

git-svn-id: https://plugins.svn.wordpress.org/wp-simple-firewall/trunk@927026 b8457f37-d9ea-0310-8a92-e5e31aec5664
version bump to 2.6.4

git-svn-id: https://plugins.svn.wordpress.org/wp-simple-firewall/trunk@927027 b8457f37-d9ea-0310-8a92-e5e31aec5664