Fix #4116: "Couldn't find template for digesting" errors.

Specify full path to shared partial to work around bug in the template
digesting system in Rails.

app/views/comments/partials/show/_comment.html.erb

@@ -16,7 +16,7 @@
       <div class="body prose">
         <%= format_text(comment.body) %>
 
-        <%= render "update_notice", record: comment %>
+        <%= render "application/update_notice", record: comment %>
       </div>
       
       <% if CurrentUser.is_member? %>

app/views/forum_posts/_forum_post.html.erb

@@ -15,7 +15,7 @@
       <div class="prose">
         <%= format_text(parse_embedded_tag_request_text(forum_post.body)) %>
       </div>
-      <%= render "update_notice", record: forum_post %>
+      <%= render "application/update_notice", record: forum_post %>
       <menu>
         <li>ID: <%= forum_post.id %></li>
         <% if CurrentUser.is_member? && @forum_topic %>

app/views/user_feedbacks/index.html.erb

@@ -20,7 +20,7 @@
             <td><%= compact_time(feedback.created_at) %></td>
             <td>
               <%= format_text(feedback.body) %>
-              <%= render "update_notice", record: feedback, interval: 0.minutes %>
+              <%= render "application/update_notice", record: feedback, interval: 0.minutes %>
             </td>
             <td>
               <% if feedback.editable_by?(CurrentUser.user) %>

app/views/user_name_change_requests/show.html.erb

@@ -8,7 +8,7 @@
           <th>Date</th>
           <td>
             <%= compact_time @change_request.created_at %>
-            <%= render "update_notice", record: @change_request %>
+            <%= render "application/update_notice", record: @change_request %>
           </td>
         </tr>
         <tr>