Method: Check if old ap_meta table exists.
Method: Check if tables are updated, if not create it first.
Method: Get all completed and uncompleted tasks.
Method: Send ajax response.
Method: Migrate question and answer.
Method: Change closed post status to publish.
Method: Migrate votes data from `ap_meta` table to `ap_votes` table.
Method: Re-count answers.
Method: Migrate views data to new table.
Method: Update best answer meta.