Dead-end onboarding workflow for single-user instances #467
Description
Note: This is kind of a duplicate of #449.
When setting up a new LinkStack instance, if you tick the checkbox to use the administrator's profile as the homepage, once you finish the onboarding process, it dumps you onto the profile page with no obvious way to log in.
When I found myself in this situation, I looked at the LinkStack documentation, and it didn't explain how to log in, so I just guessed /admin and then /login before being able to log in. (I assume /dashboard would have worked, as well.)
Probably the most user-friendly fix for this would be to add a preference to show or hide a "Log In"/"Dashboard" link on each profile, with the preference enabled by default if the administrator sets their profile as the homepage during initial setup and disabled by default otherwise.
Making this a preference that can be changed after the fact would cover for particular admins not preferring these defaults, but as a heuristic it would help prevent the situation I found myself in, literally having to guess the URL for the dashboard login page.