modifications for security and stuff

app/controllers/asks_controller.rb

@@ -580,7 +580,7 @@ class AsksController < ApplicationController
     if host_url == "http://"
       host_url = request.protocol + request.host_with_port
     end
-    mail_subject = mail_from+"  #{t('ask.new_question')}："
+    mail_subject = mail_from + " ： " + email_er.category.title
     email_er.email.update_attributes(
       :mail_lang=> site.default_locale,
       :create_user=>(current_user rescue nil),