fix bug where task stats were not updating using batch discuss button
fix bug where task stats were not updating using batch discuss button

final-year-project/doubtfire-web,doubtfire-lms/doubtfire-web,alexcu/doubtfire-web,final-year-project/doubtfire-web,alexcu/doubtfire-web,doubtfire-lms/doubtfire-web,doubtfire-lms/doubtfire-web,doubtfire-lms/doubtfire-web