extract to a component to ease override with Archiva

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1439700 13f79535-47bb-0310-9956-ffa450edef68
add classes

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1439701 13f79535-47bb-0310-9956-ffa450edef68