Stefan Melmuk fa7dbedd5d redirect to admin login page when forward fails ... currently, if the admin guard fails the user will get a 404 page. and when the session times out after 20 minutes post methods will give the reason "undefined" as a response while generating the support string will fail without any user feedback. this commit changes the error handling on admin pages * by removing the reliance on Rockets forwarding and making the login page an explicit route that can be redirected to from all admin pages * by removing the obsolete and mostly unused Referer struct we can redirect the user back to the requested admin page directley * by providing an error message for json requests the `get_diagnostics_config` and all post methods can return a more comprehensible message and the user can be alerted * the `admin_url()` function can be simplified because rfc2616 has been obsoleted by rfc7231 in 2014 (and also by the recently released rfc9110) which allows relative urls in the Location header. c.f. https://www.rfc-editor.org/rfc/rfc7231#section-7.1.2 and https://www.rfc-editor.org/rfc/rfc9110#section-10.2.2		2022-11-28 16:46:06 +01:00
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admin	redirect to admin login page when forward fails	2022-11-28 16:46:06 +01:00
email	fix: removed a double space	2022-11-07 08:39:56 +01:00