New UI and UX for the dossier initialization

config/routes.rb

@@ -73,6 +73,9 @@ Rails.application.routes.draw do
       post '/carte' => 'carte#save'
 
       put '/archive' => 'dossiers#archive'
+
+      post '/siret_informations' => 'dossiers#siret_informations'
+      put '/change_siret' => 'dossiers#change_siret'
     end
     resource :dossiers
   end