Removing the user, based on recent changes

On IRC @TadeasKriz did report an error with the login:

```
I can't (login) as the admin doesnt have the 'user' role anymore which is required to log in, so if this is just me or not;

the web.xml in the server/ says it needs 'user' role
```

Applying the ``admin`` role to the ``web.xml`` file to match with this change: 0540ebae20bea9f7383f8eafea6b002226d686be