Gracefully redirect when accessing valid URI without necessary context.

[RokeJulianLockhart]

• https://linksta.cc/studio/edit-link/

  

• https://linksta.cc/studio/

  

Accidentally backtracking to these is easy. The site should redirect to https://linksta.cc/dashboard from https://linksta.cc/studio/ and https://linksta.cc/studio/links from https://linksta.cc/studio/edit-link/.

[JulianPrieber]

Please check again now

[RokeJulianLockhart]

#599 (comment)

@JulianPrieber, same behaviour at aforementioned URIs.