showcase: infinite loop for non existing subpaths caused by redirection logic in 404.html on gh-pages branch

[christophercr]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[X] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/NationalBankBelgium/stark/blob/master/CONTRIBUTING.md#got-a-question-or-problem

Current behavior

The app gets stuck in a loop when you type in the location bar a subpath that does not exist. (eg: https://stark.nbb.be/showcase/asdf/)

Expected behavior

The app should always redirect to the homepage in case of an invalid/non-existent path.

Minimal reproduction of the problem with instructions

Open this page: https://stark.nbb.be/showcase/asdf

What is the motivation / use case for changing the behavior?

Environment

Stark version: 10.0.0-beta.2

[christophercr]

There is also an issue when we go to an non-existing path in the API docs, for example: https://stark.nbb.be/api-docs/stark-ui/latest/components/whatever.html. In such case we are redirected to https://stark.nbb.be/showcase/latest/otherwise 😞

In this case we should be redirected to https://stark.nbb.be/api-docs/stark-ui/latest/

[christophercr]

The redirection logic in the 404 page in GhPages has been improved via this commit b4e973c.

Now the following use cases are handled correctly:

Typed URL	Redirected to URL
https://stark.nbb.be/whatever	https://stark.nbb.be/showcase/latest/
https://stark.nbb.be/showcase/asdf	https://stark.nbb.be/showcase/latest/
https://stark.nbb.be/showcase/10.0.0-alpha.3/qsdfdqsfds	https://stark.nbb.be/showcase/10.0.0-alpha.3/qsdfdqsfds (App 404 page)
https://stark.nbb.be/showcase/10.0.0-beta.1/nonqsfqs	https://stark.nbb.be/showcase/10.0.0-beta.1/otherwise (App 404 page)
https://stark.nbb.be/api-docs/asdf	https://stark.nbb.be/api-docs/stark-core/latest/
https://stark.nbb.be/api-docs/stark-ui/asdf	https://stark.nbb.be/api-docs/stark-ui//latest/
https://stark.nbb.be/api-docs/stark-ui/latest/components/whatever.html	https://stark.nbb.be/api-docs/stark-ui/latest/
https://stark.nbb.be/api-docs/stark-ui/latest/asdf	https://stark.nbb.be/api-docs/stark-ui/latest/
https://stark.nbb.be/api-docs/stark-ui/10.0.0-beta.1/asdf	https://stark.nbb.be/api-docs/stark-ui/10.0.0-beta.1/
https://stark.nbb.be/api-docs/stark-ui/10.0.0-beta.1/components/whatever.html	https://stark.nbb.be/api-docs/stark-ui/10.0.0-beta.1/
https://stark.nbb.be/api-docs/stark-ui/10.0.0-alpha.3/components/whatever.html	https://stark.nbb.be/api-docs/stark-ui/10.0.0-alpha.3/
https://stark.nbb.be/api-docs/stark-core/10.0.0-alpha.3/components/whatever.html	https://stark.nbb.be/api-docs/stark-core/10.0.0-alpha.3/