display more info in upload page

app/views/uploads/show.html.erb

@@ -6,6 +6,17 @@
       <li>Date: <%= @upload.created_at %></li>
       <li>Source: <%= @upload.source %></li>
       <li>Tags: <%= @upload.tag_string %></li>
+      <% if @upload.md5.present? %>
+        <li>MD5: <%= @upload.md5 %>
+      <% end %>
+      <% if @upload.file_size.present? %>
+        <li>
+          Size: <%= number_to_human_size(@upload.file_size) %></li>
+          <% if @upload.image_width.present? %>
+            (<span itemprop="width"><%= @upload.image_width %></span>x<span itemprop="height"><%= @upload.image_height %></span>)
+          <% end %>
+        </li>
+      <% end %>
     </ul>
 
     <% if @upload.is_completed? %>