Update copyright notices to 2019. Happy New Year
(cherry picked from commit 0b4c14a491664053aad3cc76e1ffd67b70ff2da1)
Update the Copyright notice for pfSense.
Move copyright from ESF to Netgate
Move to Apache License 2.0
Review license / copyright on all files (1st round)
Update license on files from /etc/inc
Convert remaining short_open_tag occurances. See PR #2378
Remove all pfSense_MODULE and pfSense_BUILDER_BINARIES definitions, whatever was the reason they were added, it was never finished and it's not being used
Move main pfSense content to src/