If the APP_URL link is incorrect, configuration updates redirect to the wrong page

[Raikia]

Like the title says, if APP_URL is set incorrectly and you do a configuration update via the web interface ("Settings" --> "Configurations"), the user will be redirected to the APP_URL link instead of a correct link.

Example: APP_URL set to "http://localhost"

If you hit "save" in the configurations page, you will be redirected to "http://localhost/config/settings/".