Add I18n texts for the link to see the image.

The image is shown in the public investment window if the milestone has one.

app/views/admin/budget_investments/_milestones.html.erb

@@ -22,7 +22,7 @@
             <%= milestone.description %>
           </td>
           <td class="small">
-            <%= link_to 'Ver imagen', milestone.image_url(:large), target: :_blank if milestone.image.present? %>
+            <%= link_to t("admin.milestones.index.show_image"), milestone.image_url(:large), target: :_blank if milestone.image.present? %>
           </td>
           <td>
             <%= link_to t("admin.milestones.index.delete"), admin_budget_budget_investment_budget_investment_milestone_path(@investment.budget, @investment, milestone),

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

@@ -16,6 +16,7 @@
                   <strong><%= t("budgets.investments.show.milestone_publish_date", publish_date: l(milestone.created_at.to_date)) %></strong>
                 </span>
                 <p><%= milestone.description %></p>
+                <%= image_tag milestone.image_url(:large) if milestone.image.present? %>
               </div>
             </li>
           <% end %>

config/locales/en/admin.yml

@@ -196,6 +196,7 @@ en:
         table_actions: "Actions"
         delete: "Delete milestone"
         no_milestones: "Don't have defined milestones"
+        show_image: "Show image"
       new:
         creating: Create milestone
       edit:

config/locales/es/admin.yml

@@ -196,6 +196,7 @@ es:
         table_actions: "Acciones"
         delete: "Eliminar hito"
         no_milestones: "No hay hitos definidos"
+        show_image: "Ver imagen"
       new:
         creating: Crear hito
       edit: