Removed extra filename parsing in metadata cleaner. If it hadn't been done yet,…

Removed extra filename parsing in metadata cleaner. If it hadn't been done yet, your files won't be renamed anyway.

tasks/paperclip_tasks.rake

@@ -48,7 +48,7 @@ namespace :paperclip do
     task :metadata => :environment do
       for_all_attachments do |instance, name|
         if file = instance.send(name).to_file
-          instance.send("#{name}_file_name=", instance.send("#{name}_file_name").strip.gsub(/[^\w\d\.\-]+/, '_'))
+          instance.send("#{name}_file_name=", instance.send("#{name}_file_name").strip
           instance.send("#{name}_content_type=", file.content_type.strip)
           instance.send("#{name}_file_size=", file.size) if instance.respond_to?("#{name}_file_size")
           instance.save(false)