Add `GroupRedirect` model.
Add `GroupRedirect` model.

beeftornado/sentry,jean/sentry,looker/sentry,alexm92/sentry,BuildingLink/sentry,JamesMura/sentry,gencer/sentry,fotinakis/sentry,mvaled/sentry,fotinakis/sentry,mvaled/sentry,jean/sentry,alexm92/sentry,JackDanger/sentry,BuildingLink/sentry,gencer/sentry,ifduyue/sentry,gencer/sentry,fotinakis/sentry,beeftornado/sentry,jean/sentry,beeftornado/sentry,mitsuhiko/sentry,ifduyue/sentry,JamesMura/sentry,BuildingLink/sentry,mitsuhiko/sentry,zenefits/sentry,looker/sentry,ifduyue/sentry,fotinakis/sentry,looker/sentry,JackDanger/sentry,mvaled/sentry,JackDanger/sentry,jean/sentry,JamesMura/sentry,zenefits/sentry,BuildingLink/sentry,zenefits/sentry,looker/sentry,mvaled/sentry,gencer/sentry,zenefits/sentry,ifduyue/sentry,BuildingLink/sentry,ifduyue/sentry,zenefits/sentry,JamesMura/sentry,alexm92/sentry,jean/sentry,JamesMura/sentry,mvaled/sentry,looker/sentry,gencer/sentry,mvaled/sentry