Differentiate between hidden and visible URIs

### Environment
* Phabfive version:
* Python version:

### Proposed Functionality

Phabfive currently does not make a difference between hidden and visible URIs.

```
$ phabfive diffusion uri list kubespray
git@github.com:dynamist/kubespray.git
ssh://.../dynamist/kubespray.git
ssh://.../dynamist/kubespray_b.git
```

Suggested new cli behaviour

```
$ phabfive diffusion uri list kubespray
git@github.com:dynamist/kubespray.git

$ phabfive diffusion uri list hidden kubespray
ssh://.../dynamist/kubespray.git
ssh://.../dynamist/kubespray_b.git
```

Suggested docopt: `phabfive diffusion uri list [(visible || hidden || all)] [options]`

Examples might not be exact replicas of suggested input/output.

### Use Case

### Other?

None