Displays thumbnails of attached images of the issue view (#1006).

This behaviour can be turned on/off in Settings -> Display (off by default). Thumbnail size can be configured there too.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9933 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/issues/show.html.erb

@@ -81,7 +81,7 @@ end %>
   <%= textilizable @issue, :description, :attachments => @issue.attachments %>
   </div>
 <% end %>
-<%= link_to_attachments @issue %>
+<%= link_to_attachments @issue, :thumbnails => true %>
 <% end -%>
 
 <%= call_hook(:view_issues_show_description_bottom, :issue => @issue) %>