(trafficshaper) unload ipfw rules when all ipfw rules should be disabled, closes https://github.com/opnsense/core/issues/407

(legacy) fix for https://github.com/opnsense/core/issues/400, missing "Interface address" option in translation/target

Still missing language picking, will follow soon.

It looks like the new components are not yet setting a different
language internally.  Time to fix that, huh...

Submitted by: Tikimotel
PR: https://forum.opnsense.org/index.php?topic=1416.0

Doing tab conversion makes the space waste more obvious than ever.
Try to close the gap a little, open for discussion!

o Convert pkg-info to pkg-query.
o Thin out unused fields.
o Add flatsize to GUI.
o Way faster.  :D

Discussed with: ad@

o Remove a subtype of <includefile/> to reduce feature bloat
o Select 32 bit subnet (host) as a suggestion
o Never skip LAN and make it optional instead
o Fix regression of $xml passing
o Fix voodoo on Static

Not sure why "Static" should be special.  Skipping over LAN setup
is ok, skipping over admin password change is NOT.

JS regex validation should die, but so should this wizard so
just touch up on the subject of IP validation, improving:

o Allow leading zeros
o Fail on x.x.x.0

o We could potentially pass files using xml=../../xxx, so just
  hardcode the wizards we know for now.  I don't expect them to
  grow, otherwise we may be able to do a directory expand.

o Move xml files out of the /usr/local/www/wizards into /usr/local/wizard.

o Move the include file to the normal include path /usr/local/etc/inc.

o Allow the menu to always expand to the setup wizard, even though
  we many be triggering the OpenVPN wizard.  This gives a consistent
  feel of navigation, especially since POST requests hide the invoked
  wizard later on anyway.

(mvc) add AuthenticationServerField type to model, to select authentication servers (which only exists in the legacy data)