cleanup code

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1580761 13f79535-47bb-0310-9956-ffa450edef68
fix deleting project version

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1580762 13f79535-47bb-0310-9956-ffa450edef68
fix removeArtifact

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1580763 13f79535-47bb-0310-9956-ffa450edef68
fix cleanup repository and namespace

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1580764 13f79535-47bb-0310-9956-ffa450edef68
fix removeArtifact

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1580765 13f79535-47bb-0310-9956-ffa450edef68