通知邮件支持用户不存在时发送base_url

app/models/message_template/custom_tip.rb

@@ -61,6 +61,7 @@ class MessageTemplate::CustomTip < MessageTemplate
     end
     title.gsub!('{platform}', PLATFORM)
     content.gsub!('{platform}', PLATFORM)
+    content.gsub!('{baseurl}', base_url)
 
     return title, content
   rescue => e