Modify sign in flow on all dapps

When the user wants to sign in into a dapp. They will be redirected to the auth site. Once the sign in is complete. They will be redirected back to the original site.

For example:
- User visits decentraland.org/market and want to connect
- User is moved to decentraland.org/auth
- User signs in
- User is redirected back to decentraland.org/market

Apps to update:
- [x] Market
- [x] Builder
- [x] Account
- [x] Profile
- [x] Places
- [x] Events
- [x] Rewards
- [x] Dao
- [ ] Governance

Play is to be updated on a different task.