Move translation viewing to admin namespace

app/views/admin/dashboard/index.html.erb

@@ -0,0 +1,2 @@
+<h1><%= t('.administration') %></h1>
+<%= link_to t('.view_translations'), admin_translations_path %>

app/views/admin/translations/index.html.erb

@@ -13,7 +13,7 @@
     <% @translations.each do |translation| %>
       <tr>
         <td><%= translation.id %></td>
-        <td><%= link_to translation.title, translation %></td>
+        <td><%= link_to translation.title, [:admin, translation] %></td>
       </tr>
     <% end %>
   </tbody>

app/views/layouts/application.html.erb

@@ -27,7 +27,7 @@
         <%= nav class: 'navbar-left' do %>
             <%= link_to Problem.model_name.human(count: 2), problems_path %>
             <% if admin_signed_in? %>
-              <%= link_to Translation.model_name.human(count: 2), translations_path %>
+              <%= link_to t('admin.dashboard.index.administration'), :admin %>
             <% end %>
         <% end %>
         <%= nav class: 'navbar-right' do %>