The current data structure is like this
```python
{
  'alt_default': u'/firefox/os/',
  'alternate': {
    'fr': {'url': u'/fr/firefox/os/', 'label': u'Fran\xe7ais'},
    'en-US': {'url': u'/en-US/firefox/os/', 'label': u'English (US)'}
  },
  'canonical': u'http://www.mozilla.org/en-US/firefox/os/'
}
```
but, oh, that's redundant. It's should be much simpler:
```python
{
  'canonical_url': u'/firefox/os/',
  'languages': [
    {'fr': u'Fran\xe7ais'},
    {'en-US': u'English (US)'}
  ]
}
```