When running `ckan user token add` you get this output by default:

```
API Token created:
        eyJ0eXAiOiJKV1QiL...
```

This is user-friendly but is not great for integrating in user scripts
as you need to clean up the output a bit, eg:

```
export CKAN_API_TOKEN=$(ckan user token add ckan_user my_token | tail -n 1 | tr -d '\t')
```

The changes suggested add a `--quiet` / `-q` flag that make the command
just output the token directly so you can do:

```
export CKAN_API_TOKEN=$(ckan user token add ckan_user my_token -q)
```