pfSense

Update the Copyright year.

A subsequent commit will deal with .po's.

This is 2020. Issue #9245

Update copyright notice years. Issue #9245

Fix copyright message years to reflect BSDP -> ESF -> Netgate

Update the Copyright notice for pfSense.

Rework captive portal to run with stock IPFW (round 1)

- Remove use of IPFW context
- Create a rule that will skip to proper rule for each cp zone
- Use new PHP module functions wherever is possible

Move copyright from ESF to Netgate

Move to Apache License 2.0

Review license / copyright on all files (1st round)

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....

Move main pfSense content to src/