[front][model] Add model and migration about professionals
[front][controller&views] Add professional controller and views
[front][navigation] Add route and shared partial
[front][migration] Fix mistake on longitude/latitude types
[front][gems] Add Google-Maps-for-Rails
[add helper for js enhancement]
[front][controller] Add an helper_method to generate markers
[front][view] Extend view to permit display of markers on map
[front][db] Add forgotten db/schema.rb files. Oops !
[front][locales] Add some locales for :fr and :en
[enhance views]
css enhancement