FIX: missing category from title in non-js view

app/views/topics/show.html.erb

@@ -61,4 +61,4 @@
                           image: @topic_view.image_url) %>
 <% end %>
 
-<% content_for(:title) { @topic_view.title } %>
+<% content_for(:title) { "#{@topic_view.page_title}" } %>

lib/topic_view.rb

@@ -131,6 +131,14 @@ class TopicView
     @topic.relative_url
   end
 
+  def page_title
+    title = @topic.title
+    unless @topic.category_id == SiteSetting.uncategorized_category_id
+      title += " - #{topic.category.name}"
+    end
+    title
+  end
+
   def title
     @topic.title
   end