Use letsencrypt cert with mumble

src/freedombone-app-mumble

     fi
     cp /etc/ssl/certs/mumble.* /var/lib/mumble-server
     cp /etc/ssl/private/mumble.key /var/lib/mumble-server
+    if [ ! -f /var/lib/mumble-server/mumble.pem ]; then
+        mv /var/lib/mumble-server/mumble.crt /var/lib/mumble-server/mumble.pem
+    fi
     chown -R mumble-server:mumble-server /var/lib/mumble-server
 
     sed -i "s|welcometext=.*|welcometext=\"<br />Welcome to $DEFAULT_DOMAIN_NAME <b>mumble</b>.<br />Chat freely!<br />\"|g" /etc/mumble-server.ini
         echo 'allowping=False' >> /etc/mumble-server.ini
     fi
     sed -i 's|allowping=.*|allowping=False|g' /etc/mumble-server.ini
-    sed -i 's|#sslCert=.*|sslCert=/var/lib/mumble-server/mumble.crt|g' /etc/mumble-server.ini
+    sed -i 's|#sslCert=.*|sslCert=/var/lib/mumble-server/mumble.pem|g' /etc/mumble-server.ini
     sed -i 's|#sslKey=.*|sslKey=/var/lib/mumble-server/mumble.key|g' /etc/mumble-server.ini
     sed -i 's|#certrequired=.*|certrequired=True|g' /etc/mumble-server.ini
     sed -i 's|users=100|users=10|g' /etc/mumble-server.ini
 
     MUMBLE_ONION_HOSTNAME=$(add_onion_service mumble ${MUMBLE_PORT} ${MUMBLE_PORT})
 
+    update_default_domain
     systemctl restart mumble-server
 
     if ! grep -q $"Mumble Server" /home/$MY_USERNAME/README; then

src/freedombone-utils-web

         chmod -R 700 /etc/prosody/certs/*
         systemctl restart prosody
     fi
+
+    if [ -d /var/lib/mumble-server ]; then
+        if [[ $(cert_exists ${DEFAULT_DOMAIN_NAME} pem) == "1" ]]; then
+            cp /etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.pem /var/lib/mumble-server/mumble.pem
+            cp /etc/ssl/certs/${DEFAULT_DOMAIN_NAME}.dhparam /var/lib/mumble-server/mumble.dhparam
+            cp /etc/ssl/private/${DEFAULT_DOMAIN_NAME}.key /var/lib/mumble-server/mumble.key
+            chown -R mumble-server:mumble-server /var/lib/mumble-server
+            chmod -R 700 /var/lib/mumble-server/${DEFAULT_DOMAIN_NAME}.pem
+            chmod -R 700 /var/lib/mumble-server/${DEFAULT_DOMAIN_NAME}.key
+            chmod -R 700 /var/lib/mumble-server/${DEFAULT_DOMAIN_NAME}.dhparam
+        fi
+    fi
 }
 
 # NOTE: deliberately no exit 0