Added PHP 7.2 support + minor bugfixes and performance tweaks

Note when applying this update you will have to update existing nginx vhosts to match new listening addresses (IPv6). Preferably you should update them to unix socket though and apply the changes to the tor hidden service config as well

etc/systemd/system/php7.2-fpm@default.service

@@ -0,0 +1,17 @@
+[Unit]
+Description=The PHP 7.2 FastCGI Process Manager
+Documentation=man:php-fpm7.2(8)
+After=network.target
+PartOf=php7.2-fpm.service
+ReloadPropagatedFrom=php7.2-fpm.service
+
+[Service] 
+Type=notify
+PIDFile=/run/php/php7.2-fpm.pid
+ExecStart=/usr/sbin/php-fpm7.2 --nodaemonize --fpm-config /etc/php/7.2/fpm/php-fpm.conf
+ExecReload=/bin/kill -USR2 $MAINPID
+LimitNOFILE=100000
+TimeoutStartSec=300
+
+[Install]
+WantedBy=multi-user.target