fixes #866

app/models/user.rb

@@ -299,6 +299,9 @@ class User < ActiveRecord::Base
 
       when Levels::ADMIN
         "Admin"
+        
+      else
+        ""
       end
     end
 

app/presenters/post_presenter.rb

@@ -69,7 +69,7 @@ class PostPresenter < Presenter
 
   def image_html(template)
     return template.content_tag("p", "The artist requested removal of this image") if @post.is_banned? && !CurrentUser.user.is_privileged?
-    return template.content_tag("p", "You need a privileged account to see this image.") if !Danbooru.config.can_user_see_post?(CurrentUser.user, @post)
+    return template.content_tag("p", template.link_to("You need a privileged account to see this image.", template.upgrade_information_users_path)) if !Danbooru.config.can_user_see_post?(CurrentUser.user, @post)
 
     if @post.is_flash?
       template.render("posts/partials/show/flash", :post => @post)

app/views/posts/show.html.erb

@@ -24,7 +24,9 @@
       <section>
         <h1>History</h1>
         <ul>
-          <li><%= fast_link_to "Tags", post_versions_path(:search => {:post_id => @post.id}) %></li>
+          <% if Danbooru.config.can_user_see_post?(CurrentUser.user, @post) %>
+            <li><%= fast_link_to "Tags", post_versions_path(:search => {:post_id => @post.id}) %></li>
+          <% end %>
           <li><%= fast_link_to "Notes", note_versions_path(:search => {:post_id => @post.id}) %></li>
         </ul>
       </section>