Fix alert type as a result of the updated UI Bootstrap
Fix alert type as a result of the updated UI Bootstrap

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