Allow partners to register booths

[nafur]

Right now there seems to be no way for partners (i.e. users that login via a secret token) to register for a booth (or do anything else that some other regular user can do).
We have some cases where users would like to do exactly that...

Is it possible to simply allow password reset (and the normal login, subsequently) for these users?

[nafur]

Apparently this is rather an UI than an actual permission issue.
Partners can very well access /exhibitors/new and complete the registration process, but not navigate there in the first place.
The problem seems to be that /overview redirects to the login page for such users instead of presenting the links for booth and devroom registration.

[nafur]

One possible fix: #17

[chrisz100]

Correction: /overview is not redirecting anywhere - but / is. And all home hyperlinks point not to Rome but to / 👈