add tags to post file urls

config/danbooru_default_config.rb

@@ -396,6 +396,10 @@ module Danbooru
     def addthis_key
     end
 
+    def enable_seo_post_urls
+      false
+    end
+
     # enable some (donmai-specific) optimizations for post counts
     def estimate_post_counts
       true