Trailing slash in issuer

[michielbdejong]

See https://travis-ci.com/github/pdsinterop/php-solid-server/builds/190957568#L2133
It should not have a trailing slash there.
See also 3299c4e

[Potherca]

I encountered the same issue, have a fix pending. Ideally this bug will go away when we replace the hard-coded bit with dynamic host-name retrieval.

[Potherca]

A first solution has been implemented in 9b2c3e0 by retrieving the domain form $_SERVER['REQUEST_URI'], this can later be replaced by a config setting if/when needed.

Closing this issue for now.