Generate relevant UI when API includes choices as radio type

[landlessness]

When the API returns type radio, it would be helpful if the Zetta browser presented an affordance in the UI that allowed the user to select one of the options. See the attached screenshot generated from the API below.

Screenshot of UI generated from the API response below:

the API response with radio type that generated UI above:

{"class":["device"],"properties":{"id":"34a213d0-5ed4-499b-a26a-35cd7cadb5a8","type":"text-to-speech","name":"Text to Speech","state":"silent"},"actions":[{"name":"say","method":"POST","href":"http://0.0.0.0:1337/servers/976268fd-9b31-4076-a78e-f285cd05a772/devices/34a213d0-5ed4-499b-a26a-35cd7cadb5a8","fields"[{"name":"words","type":"text"},
  {"name":"voice","type":"radio","value":
    [
      {"name":"Agnes","locale":"en_US","example":"Isn't it nice to have a computer that will talk to you?"},
      {"name":"Albert","locale":"en_US","example":"I have a frog in my throat. No, I mean a real frog!"},
      {"name":"Paola","locale":"it_IT","example":"Salve, mi chiamo Paola e sono una voce italiana."}]},
      {"name":"action","type":"hidden","value":"say"}
    ]
  }
],"links":[{"rel":["self"],"href":"http://0.0.0.0:1337/servers/976268fd-9b31-4076-a78e-f285cd05a772/devices/34a213d0-5ed4-499b-a26a-35cd7cadb5a8"},{"title":"Brians-MacBook-Air.local","rel":["up","http://rels.zettajs.io/server"],"href":"http://0.0.0.0:1337/servers/976268fd-9b31-4076-a78e-f285cd05a772"},{"title":"state","rel":["monitor","http://rels.zettajs.io/object-stream"],"href":"ws://0.0.0.0:1337/servers/976268fd-9b31-4076-a78e-f285cd05a772/events?topic=text-to-speech%2F34a213d0-5ed4-499b-a26a-35cd7cadb5a8%2Fstate"},{"title":"logs","rel":["monitor","http://rels.zettajs.io/object-stream"],"href":"ws://0.0.0.0:1337/servers/976268fd-9b31-4076-a78e-f285cd05a772/events?topic=text-to-speech%2F34a213d0-5ed4-499b-a26a-35cd7cadb5a8%2Flogs"}]}

[landlessness]

Confer with the zetta-discuss topic with @alanguir @kevinswiber and @mdobson about this issue: https://groups.google.com/forum/#!msg/zetta-discuss/vYyuIZwr8yE/WjVZAMXok0EJ

[13protons]

Closed by #23