bugfix: relax `next` verification
AUR renders its own 404 Not Found page when a bad route is encountered. Introducing the previous verification caused an error in this case when setting a language while viewing the Not Found page. So, instead of checking through routes, just make sure that the next parameter starts with a '/' character, which removes the possibility of any cross attacks.
- Removed aurweb.asgi.routes; no longer needed.
Signed-off-by: Kevin Morris kevr@0cost.org