id, extra.uuid

[eskerda]

Currently id outputs an... md5 of the pair lat / lng. That's not an id, that's a hash (could be useful to identify uniqueness or to run a search, as this hash would be related to an id). Now, ids should not be inferable, given a set of data (let's say, lat and lng), a hash should.

Extra.uuid currently gives (when available) the "official" system id of an station. That's also not an uuid, but more of an internal_id, official_id, shitty_id, or even, just number.

So, work to do: generate uuids for the id, move the current id to a hash field, and rename extra.uuid to extra.number.

[eskerda]

Example station extract from velib:

  {
    "empty_slots": 0, 
    "extra": {
      "address": "RUE DES CHAMPEAUX (PRES DE LA GARE ROUTIERE) - 93170 BAGNOLET", 
      "banking": true, 
      "bonus": true, 
      "last_update": 1402065351000, 
      "slots": 50, 
      "status": "CLOSED", 
      "uid": 31705
    }, 
    "free_bikes": 0, 
    "id": "c58b7351e4f8546e91f548487789d215", 
    "latitude": 48.8645278209514, 
    "longitude": 2.416170724425901, 
    "name": "31705 - CHAMPEAUX (BAGNOLET)", 
    "timestamp": "2014-06-06T14:37:42.766Z"
  }