menu entry == link from main page

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1468033 13f79535-47bb-0310-9956-ffa450edef68
update screenshot

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1468035 13f79535-47bb-0310-9956-ffa450edef68
add screenshot of ldap group - roles mapping

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1468036 13f79535-47bb-0310-9956-ffa450edef68