* Issue 2429 indicates the possiblity of an open redirect
The 404 processing ends up redirecting a request with multiple path
slashes to that site, i.e.
https://my-site//shedcode.co.uk will redirect to https://shedcode.co.uk
This commit uses a regular expression to remove the multiple leading
slashes before redirecting.
Closes#1238
- base_url no longer causes custom page routing to fail
- new route_path key in request.scope storing the path that was used for routing with the base_url prefix stripped
- TestClient used by tests now avoids accidentally double processing of the base_url prefix