Turn matrix logging on or off

src/freedombone-logging

         sed -i 's|loglevel.*|loglevel = 3|g' /etc/fail2ban/fail2ban.conf
         sed -i 's|logtarget.*|logtarget = /var/log/fail2ban.log|g' /etc/fail2ban/fail2ban.conf
     fi
+    if [ -f /var/lib/matrix/homeserver.yaml ]; then
+        sed -i 's|log_file:.*|log_file: /var/lib/matrix/homeserver.log|g' /var/lib/matrix/homeserver.yaml
+    fi
     if [ -d /etc/tor ]; then
         if [ ! -f /var/log/tor.log ]; then
             touch /var/log/tor.log
     fi
     turn_on_rsys_logging
 else
+    if [ -f /var/lib/matrix/homeserver.yaml ]; then
+        sed -i 's|log_file:.*|log_file: /dev/null|g' /var/lib/matrix/homeserver.yaml
+    fi
     if [ -d /etc/tor ]; then
         sed -i 's|#Log notice file.*|Log notice file /dev/null|g' /etc/tor/torrc
         sed -i 's|Log notice file.*|Log notice file /dev/null|g' /etc/tor/torrc
 if [ -d /etc/fail2ban ]; then
     systemctl restart fail2ban
 fi
+if [ -f /var/lib/matrix/homeserver.yaml ]; then
+    systemctl restart matrix
+fi
 
 exit 0