move bindDn password near bindDn input

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1449088 13f79535-47bb-0310-9956-ffa450edef68
ease users life for ldap setup make com.sun.jndi.ldap.LdapCtxFactory default if available.

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1449089 13f79535-47bb-0310-9956-ffa450edef68
make sure rbacmanager is not readonly before chaining write actions

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1449090 13f79535-47bb-0310-9956-ffa450edef68