pfSense

Always use require_once

The usage of require() and require_once() throughout the system is
inconsistent, and "bugs" come up now and then when the order of
"requires" is a bit different and some require() happens after the
include file is already included/required....

Use the translated destination for kill_states if one exists. Ticket #6531

Correct/clarify column header. Ticket #6530

Fix style

pfSense_get_pf_states always returns source as src and dest as dst, this flipping based on direction is wrong. Ticket #6530

Fix style

Comment typo

Revert "adding privileges and separating DNS Resolver overrides from general settings"

This reverts commit fc76a1e390c8ce9579df31457c74d1d0e572b78d.

Merge pull request #3019 from NOYB/RFC2136_Client_Edit_Priv_Def

Merge pull request #3017 from phil-davis/patch-2