Add translation to published milestone. Fix test

app/views/budgets/investments/_milestones.html.erb

@@ -12,7 +12,7 @@
             <li>
               <div>
                 <h3><%= milestone.title %></h3>
-                <strong>Publicado el <%= milestone.created_at.strftime("%d/%m/%Y") %></strong>
+                <strong><%= t("budgets.investments.show.milestone_publish_date", publish_date: milestone.created_at.strftime("%d/%m/%Y")) %></strong>
                 <p><%= milestone.description %></p>
               </div>
             </li>

config/locales/budgets.en.yml

@@ -96,6 +96,7 @@ en:
         comments_tab: Comments
         milestones_tab: Milestones
         no_milestones: Don't have defined milestones
+        milestone_publish_date: "Published %{publish_date}"
       wrong_price_format: Only integer numbers
       investment:
         add: Vote

config/locales/budgets.es.yml

@@ -96,6 +96,7 @@ es:
         comments_tab: Comentarios
         milestones_tab: Seguimiento
         no_milestones: No hay hitos definidos
+        milestone_publish_date: "Publicado el %{publish_date}"
       wrong_price_format: Solo puede incluir caracteres numéricos
       investment:
         add: Votar

spec/features/budgets/investments_spec.rb

@@ -402,6 +402,7 @@ feature 'Budget Investments' do
     within("#tab-milestones") do
       expect(page).to have_content(milestone.title)
       expect(page).to have_content(milestone.description)
+      expect(page).to have_content("Published #{milestone.created_at.strftime("%d/%m/%Y")}")
     end
   end