Make display only shops work again, this will show the product list when the OC is open but ship and pay methods are not available

Add spec to cover display only shops, it's oficially a feature now :-)

app/views/shopping_shared/tabs/_shop.html.haml

@@ -4,7 +4,8 @@
 
   - if no_open_order_cycles?
     = render partial: "shop/messages/closed_shop"
-
   - else
     = render partial: "shop/messages/select_oc"
-    = render partial: "shop/products/form"
+
+  -# Rendering the form, even if there are no open OCs, makes display only shops possible
+  = render partial: "shop/products/form"

spec/features/consumer/shopping/shopping_spec.rb

@@ -232,6 +232,28 @@ feature "As a consumer I want to shop with a distributor", js: true do
           expect(page).not_to have_content variant3.display_name
         end
       end
+
+      context "when the distributor has no available payment/shipping methods" do
+        before do
+          distributor.update_attributes shipping_methods: [], payment_methods: []
+        end
+
+        # Display only shops are a very useful hack that is described in the user guide
+        it "still renders a display only shop" do
+          visit shop_path
+          expect(page).to have_content product.name
+
+          # Add product to cart
+          fill_in "variants[#{variant.id}]", with: '1'
+          wait_for_debounce
+          expect(page).to have_in_cart product.name
+          wait_until { !cart_dirty }
+
+          # Try to go to cart
+          visit main_app.cart_path
+          expect(page).to have_content "The hub you have selected is temporarily closed for orders. Please try again later."
+        end
+      end
     end
 
     describe "group buy products" do
@@ -463,11 +485,13 @@ feature "As a consumer I want to shop with a distributor", js: true do
         visit shop_path
         expect(page).to have_content "Orders are closed"
       end
+
       it "shows the last order cycle" do
         oc1 = create(:simple_order_cycle, distributors: [distributor], orders_open_at: 17.days.ago, orders_close_at: 10.days.ago)
         visit shop_path
         expect(page).to have_content "The last cycle closed 10 days ago"
       end
+
       it "shows the next order cycle" do
         oc1 = create(:simple_order_cycle, distributors: [distributor], orders_open_at: 10.days.from_now, orders_close_at: 17.days.from_now)
         visit shop_path