浏览器tab的title，显示用户姓名，不是登录名

app/helpers/application_helper.rb

@@ -1044,9 +1044,9 @@ module ApplicationHelper
       elsif @organization
         title << @organization.name
       elsif @user
-        title << @user.login
+        title << @user.try(:realname)
       else
-        title << User.current.login
+        title << User.current.try(:realname)
       end
       if first_page.nil? || first_page.web_title.nil?
         title << Setting.app_title unless Setting.app_title == title.last