新增：webhook service

app/models/user.rb

@@ -859,6 +859,16 @@ class User < Owner
     end
   end
 
+  def to_builder 
+    Jbuilder.new do |user|
+      user.(self, :id, :login)
+      user.name self.real_name
+      user.email self.mail 
+      user.image_url self.get_letter_avatar_url
+    end
+  end
+
+
   protected
   def validate_password_length
     # 管理员的初始密码是5位