make more sense to plugins module on the top

git-svn-id: https://svn.apache.org/repos/asf/incubator/sirona/trunk@1544357 13f79535-47bb-0310-9956-ffa450edef68
update names

git-svn-id: https://svn.apache.org/repos/asf/incubator/sirona/trunk@1544358 13f79535-47bb-0310-9956-ffa450edef68