misc rules tuning

git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1622739 13f79535-47bb-0310-9956-ffa450edef68
add more-generic hacked WordPress URI rule for testing

git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1622741 13f79535-47bb-0310-9956-ffa450edef68