Deinstallation of Windows client does not remove the autostart entry

Hi,
from my point of view, the deinstallation process is incomplete, there is a leftover in the registry

```
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

"WeekToDo"="\"C:\\Users\\mario\\AppData\\Local\\Programs\\WeekToDo\\WeekToDo.exe\""
```

This should also be reomoved for a clean uninstallation.

BR Mario

