Added extra parameters

Publications are now decorated with all the parameters from the form. The `funders` and `otherFunders` values are returned as a single array in `publication.ticket.funders`.

The request:
```
{
    'funders': 'funder A, funder B, funder C',
    'otherFunders': 'otherFunder A, otherFunder B'
}
```

The returned publication:
```
{
    'ticket': {
        'funders': [
            'funder A', 'funder B', 'funder C', 'otherFunder A', 'otherFunder B'     
        ]
    }
}
```