do not ask ldap informations if ldap is not activated

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1447203 13f79535-47bb-0310-9956-ffa450edef68
missing i18n

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1447204 13f79535-47bb-0310-9956-ffa450edef68