committing 1.5.5 in trunk

git-svn-id: https://plugins.svn.wordpress.org/bbpress-notify-nospam/trunk@943685 b8457f37-d9ea-0310-8a92-e5e31aec5664
applying 1.5.5 into branch

git-svn-id: https://plugins.svn.wordpress.org/bbpress-notify-nospam/branches/1.5@943686 b8457f37-d9ea-0310-8a92-e5e31aec5664