begining moving of exteranl AD auth from squid
using username instead of DN for DC auth, more code moved out from squid
format fix
get dynamically keytabas for services
remove idle users instatiation
separate AD LDAP connection form initKeyTabs
fixed regression in squid external acl parameters
fixed regression in squid external acl parameters
removed masterLdap method
able to list external AD suers
able to list remote AD groups
able to list remote AD groups
factored out domain components for users and groups
edit user CGi does not die
user class: more compatible management of  common attributes, remove suprefluous stuff in User::ExternalAD
users from external group: get group membership, forbid write operations
remove transaltion from some exceptions because their methods should not be called from ui
ExternalAD group can retrieve its members and has some operation forbidden;  some changes for group read-only template
using UnwillingToPerform exception in LDAP::ExternalAD
Adapted LdapInfo to external ad mode