added an overlay to the WebUI and some ConnectionHandling

Software/src/main.cpp

@@ -797,8 +797,9 @@ void SystemShutdown(bool restart)
   // Check if the shutdown delay has elapsed
   if (shutdown_delay < millis())
   {
-    // Store configuration and persistence data to EEPROM
-    StoreConfig_EEPROM();
+    Webserver_Shutdown();
+
+    // Store persistence data to EEPROM
     StorePersistence_EEPROM();
 
     // Perform restart if requested, otherwise enter an indefinite loop