fix upload

# Conflicts:
#	rust/src/webserver/webserver.rs

rust/src_webpack/src/battery.ts

@@ -33,6 +33,9 @@ ajax.addEventListener("abort", () => {
 
 
 battery_flash_button.onclick = async function (){
-  ajax.open("POST", "/flashbattery");
+  //ajax.open("POST", "/flashbattery");
+  //ajax.send(battery_flash_file.files[0]);
+
+  ajax.open("POST", "/flashbattery?flash=true");
   ajax.send(battery_flash_file.files[0]);
 };