FreeNAS Code

Update the tool tips just to make it ABSOLUTELY clear that one should be putting
in their FreeNAS server's hostname, NOT an AD server name.

This will hopefully finally put this issue to rest, before we finally get sane and use a single hostname for the whole freaking system, like we should have been doing from day 1.

This will resolve the bikeshed in ticket 959 and elsewhere.

Make the number of connections passed to afpd tunable.

This addresses ticket 847.

use better label

add choices to ldap_ssl and add a migration to set right values

Make wording more short and sweet.

Remove unused import.

Use zip for enumerating the iSCSI portal groups.

remove DDP option as requested

Improve the NetBIOS/workgroup/domain name example text to
make it absolutely clear that we're dealing with the
FreeNAS instance and/or a workgroup or domain, NOT a domain
controller like the documentation kinda, sorta hinted at
before.

also "reload" istgt when a target that is associated with extent is deleted