closes: https://github.com/TryGhost/Toolbox/issues/324
refs: https://github.com/TryGhost/Ghost/issues/14446
- Currently, if url is configured to http but a request is marked secure, Ghost will handle upgrading all internal URLs to https so that there are no mixed content warnings
- From 5.0 that feature is going away, in favour of strictly honouring the configured URL
- Ghost will serve URLs exactly as configured and won't upgrade http to https anymore
- This use case was common when Ghost was first built, but in 2022 the web is mostly https.
- The code needed to support the feature creates a lot of additional complexity & maintenance overhead, so removing this gives us space to do more cool and useful stuff in 2022
