Linked to this forum thread https://forum.rockstor.com/t/rockstor-active-directory-ad-integration-implementation/561/7

Add option in AD Join to use rfc2307 schema + winbind nss info = rfc2307 (we assume that using schema for UIDS -> rfc2307 for home and shell settings of every user)

Merged @ScarabMonkey fork branch into new one refering issue + one commit

@schakrava do you agree on going on?? It's easy and we leave it as optional (default to rid backend, as actually doing)