Translations
Change the coords columns type to float and change distance name to length
[edit] distance to length, geolocated models begin (and some refactorisation)
[Remove] 'city', 'postalCode' and 'country' from happening and [add] LatLng
[edit] new tracks layout
[add] Geocoder

Geocode Happening and Track
Locate user and display tracks around
improve experience with gmap