Allow certs to be issued on the default domain for radicale

src/freedombone-sec

     fi
 
     if [ ! -d /var/www/${new_domain} ]; then
-        dialog --title $"Create a new Let's Encrypt certificate" \
-               --msgbox $'Domain not found within /var/www' 6 40
-        return
+        domain_found=
+        if [ -f /etc/nginx/sites-available/radicale ]; then
+            if grep "${new_domain}" /etc/nginx/sites-available/radicale; then
+                domain_found=1
+            fi
+        fi
+        if [ ! $domain_found ]; then
+            dialog --title $"Create a new Let's Encrypt certificate" \
+                   --msgbox $'Domain not found within /var/www' 6 40
+            return
+        fi
     fi
 
     ${PROJECT_NAME}-addcert -e $new_domain -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH