updated cartodb.js library

@davidsingal yo dude, so in the MVP pattern this view shouldn't need to access the map directly. Basically this is a composite view in the [MapView](https://github.com/Vizzuality/gfw/blob/feature/refactor-june/app/assets/javascripts/map/views/MapView.js#L104-L114). The MapView has the map reference and it can pass it to this view. What you think?