FreeNAS Code

Use correct name in copyright

validation for Interfaces, require netmask/prefix length
based on ipv4 or ipv6 address inputs

IPV6 "netmask" should be called "prefix length"

change network summary to show alias IPs and netmask

use a done method within ModelForm to run some code after FormSet save

When deleting, do a netif stop. We may also need to tweak save() a little
bit for changes by the way.

Remove EOL spacing.

forgot to use ugettext in AliasForm

Only consider an address family as filled when both address and netmask
is there.

Remove a debugging printf.

Reviewed by: zippybr