Fixed routing for auth callbacks
Fixed routing for auth callbacks

- Supposed to be set to `/<type>/(oauth2|oauth_)callback`, not a generic `/callback`.

weierophinney/mwop.net,vrkansagara/mwop.net,vrkansagara/mwop.net,vrkansagara/mwop.net,weierophinney/mwop.net,weierophinney/mwop.net,weierophinney/mwop.net,vrkansagara/mwop.net