change db file name and add qanda_app
change db file name and add qanda_app

Signed-off-by: Alp Sayin <b58f90d6f79a37bc37f4d2ef292e8be29990b45f@gmail.com>

alpsayin/django-qanda,alpsayin/django-qanda,alpsayin/django-qanda,alpsayin/django-qanda