MERGE FFL-2536 (from /branches/4.0/trunk/src) [60076]FFL-2536: WireGuard - show WireGuard local IPv4 and IPv6 addresses in [...] [60077]FFL-2536: WireGuard - restore variable for version numbering [60078]FFL-2536: WireGuard - show remote peer's IPv4 and IPv6 addresses in [...] [60121]FFL-2536: WireGuard - fix relevant findings from shellcheck [60128]FFL-2536: WireGuard - fix few overfull text boxes in documentation [60129]FFL-2536: WireGuard - minor docu fixes [60130]FFL-2536: WireGuard - fix ipv6 addresses in docu [60131]FFL-2536: WireGuard - extend documentation for Site2Site VPN tunnel