Auto log-in after signup

[jjgancfer]

Original comment by @uo283928 in #123:

I believe it would be great if whenever a wrong endpoint is accessed, it redirects to a home page instead of throwing a 404 error.
I am unsure where should we redirect to, I believe the best options are either login or home page. We have to be careful about sessions in both cases.
What are your opinions on this?

Currently, the frontend team has discussed redirecting to /login instead of the /home endpoint.