Bug in POST /me/notification endpoint

Hi. I was just playing around with your application (Big kudos for your work and sharing it) and found an involuntary bug. The `POST /me/notification endpoint` never assigns the currenct user. 

Here's a fix for line 157 in `main.py` 

```
async def set_notifications_addr(notification: Notification, request: Request, current_user: User = Depends(get_current_active_user)):
```