back to mapping link shared view

app/assets/stylesheets/apps.css.erb

@@ -129,3 +129,11 @@
     box-sizing: border-box;
     border-radius: 2px;
 }
+
+.back-to-mapping {
+  margin: 1em;
+  width: auto;
+  max-width: 100%;
+  box-sizing: border-box;
+}
+

app/views/layouts/doorkeeper.html.erb

@@ -50,6 +50,7 @@
               <% end %>
             </p>
             <div id="loading"></div>
+            <%= render partial: 'shared/back_to_mapping' %>
         </div>
 
     <% end %>

app/views/notifications/index.html.erb

@@ -25,6 +25,7 @@
       <% end %>
     </ul>
   </div>
+  <%= render partial: 'shared/back_to_mapping' %>
 </div>
 
 <%= render partial: 'notifications/header' %>

app/views/notifications/show.html.erb

@@ -9,6 +9,7 @@
       <%= link_to 'Back', notifications_path %>
     </div>
   </div>
+  <%= render partial: 'shared/back_to_mapping' %>
 </div>
 
 <%= render partial: 'notifications/header' %>

app/views/shared/_back_to_mapping.html.erb

@@ -0,0 +1,3 @@
+<div class="centerContent back-to-mapping">
+  <a href="/">Back to mapping!</a>
+</div>