ver Mar20thv2

fixed bugs in server/main.py (_create_pywinauto_node and
  get_screen_size)
finished migration of a few task configs to Windows
fixed bug in python.py

desktop_env/controllers/python.py

@@ -64,7 +64,7 @@ class PythonController:
         It can be used to execute the pyautogui commands, or... any other python command. who knows?
         """
         # command_list = ["python", "-c", self.pkgs_prefix.format(command=command)]
-        command_list = ["python3", "-c", self.pkgs_prefix.format(command=command)]
+        command_list = ["python", "-c", self.pkgs_prefix.format(command=command)]
         payload = json.dumps({"command": command_list, "shell": False})
         headers = {
             'Content-Type': 'application/json'
@@ -344,4 +344,4 @@ class PythonController:
             return response.json()["directory_tree"]
         else:
             logger.error("Failed to get directory tree. Status code: %d", response.status_code)
-            return None
+            return None