Improve interactive dialogs

src/freedombone-utils-interactive

 
     # save the results in the config file
     write_config_param "${site_name_upper}_DOMAIN_NAME" "$SITE_DOMAIN_NAME"
-    if [ $SITE_CODE ]; then
-        write_config_param "${site_name_upper}_CODE" "$SITE_CODE"
+    site_code_str="$SITE_CODE"
+    if [ ${#site_code_str} -gt 1 ]; then
+        write_config_param "${site_name_upper}_CODE" "${SITE_CODE}"
     fi
 }
 
     done
 
     # save the results in the config file
-    write_config_param "$2" "${!SITE_TITLE}"
-    write_config_param "$3" "${!SITE_DOMAIN_NAME}"
+    write_config_param "$2" "${SITE_TITLE}"
+    write_config_param "$3" "${SITE_DOMAIN_NAME}"
     site_code_str="$SITE_CODE"
     if [ ${#site_code_str} -gt 1 ]; then
-        write_config_param "$4" "${!SITE_CODE}"
+        write_config_param "$4" "${SITE_CODE}"
     fi
 }