[FIX onboarding] Add back redirectTo prop to <Wizard>
[FIX onboarding] Add back redirectTo prop to <Wizard>

I removed it in #2163 by accident os I'm adding it back.

xtina-starr/reaction,artsy/reaction-force,xtina-starr/reaction,artsy/reaction,artsy/reaction,xtina-starr/reaction,xtina-starr/reaction,artsy/reaction-force,artsy/reaction