replace skeleton files by previous version; apply obvious fixes

config/routes.rb

@@ -1,3 +1,19 @@
 Rails.application.routes.draw do
-  # For details on the DSL available within this file, see https://guides.rubyonrails.org/routing.html
+  get 'log_in' => 'sessions#new', :as => :log_in
+  match 'log_out' => 'sessions#destroy', :as => :log_out, :via => [:get, :post]
+  resources :sessions, :only => [:new, :create, :destroy]
+
+  get '/' => 'suppliers#index', :as => :root
+
+  resources :suppliers do
+    resources :articles do # name_prefix => nil
+      collection do
+        delete :destroy_all
+        get :upload
+        post :parse
+      end
+    end
+  end
+
+  match '/:controller(/:action(/:id))', :via => [:get, :post]
 end