Copy instead of Move for separate install. change install paths to archiva-2.x 

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1574733 13f79535-47bb-0310-9956-ffa450edef68
remove /archiva/ in repository url for all docs

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1574734 13f79535-47bb-0310-9956-ffa450edef68