add ntu_ga survey init sorting

vendor/built_in_modules/survey/init.rb

@@ -20,6 +20,7 @@ module Faq
 
     widgets do
       default_widget do
+        sorting 'desc(:postdate)'
         enable ["typeA"]
         query 'Survey.any_of( {:postdate.lte => Time.now} )'
         link_field :title, {:method => 'panel_survey_front_end_survey_path',:args=>:self}