[CALL FOR TESTING] 15.7.13-devel complete firewall section rework

[franco]

CSRF: the style enforcer we use works pretty well on PHP, but it introduced a JavaScript Syntax error. I did not expect this to break, but that's what devel is for some times. Oh, well, nobody expects the Spanish Inquisition. :)

As for crypto I haven't looked at this but I will try to see if I can reproduce when I'm back home.

SMTP Notifications: Gateway down messages, CARP (HA) messages, Config loading errors, some filter messages. Very disorderly and hard to trace to be honest.