modify fill_in_db so that
modify fill_in_db so that

- returns indication of adding new product into db or not

- cooperates with new way of scraping (first create scraper
then scrape and then fill in db)

MachineLearningStudyGroup/Smart_Review_Summarization,MachineLearningStudyGroup/Smart_Review_Summarization,MachineLearningStudyGroup/Smart_Review_Summarization,MachineLearningStudyGroup/Smart_Review_Summarization