menu handling for keywords improved

git-svn-id: https://plugins.svn.wordpress.org/affiliate/trunk@923114 b8457f37-d9ea-0310-8a92-e5e31aec5664
tagged 1.1.3

git-svn-id: https://plugins.svn.wordpress.org/affiliate/trunk@923121 b8457f37-d9ea-0310-8a92-e5e31aec5664