add rough user attributes API

app/controllers/panel/users_controller.rb

@@ -13,6 +13,7 @@ class Panel::UsersController < ApplicationController
   
   def new
     @user = User.new
+    @user_attributes = UserAttribute.all
   end
   
   def create
@@ -26,6 +27,7 @@ class Panel::UsersController < ApplicationController
   
   def edit
     @user = User.find(params[:id])
+    @user_attributes = UserAttribute.all
   end
   
   def update