Use letsencrypt certificate for irc bouncer

src/freedombone-app-irc

                ONION_ONLY)
 
 function start_irc_bouncer {
-    su -c 'znc -p' - znc
+    update_default_domain
+    su -c 'znc' - znc
 }
 
 function stop_irc_bouncer {

src/freedombone-utils-web

             systemctl reload mumble
         fi
     fi
+
+    if [ -d /home/znc/.znc ]; then
+        if [[ $(cert_exists ${DEFAULT_DOMAIN_NAME} pem) == "1" ]]; then
+            pkill znc
+            cat /etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.pem /etc/ssl/private/${DEFAULT_DOMAIN_NAME}.key > /home/znc/.znc/znc.pem
+            chown znc:znc /home/znc/.znc/znc.pem
+            chmod 700 /home/znc/.znc/znc.pem
+            su -c 'znc' - znc
+    fi
 }
 
 # NOTE: deliberately no exit 0