Merge remote-tracking branch 'origin/dev_aliyun' into dev_aliyun

lib/tasks/statistic_subject_info.rake

@@ -134,7 +134,6 @@ namespace :subjects do
         buffer_size += 1
         if buffer_size == 1000
           sql = "REPLACE INTO subject_user_infos(#{column_value}) VALUES #{str}"
-          puts sql
           ActiveRecord::Base.connection.execute sql
           str = ""
           buffer_size = 0