Safari cache despite no cache

https://stackoverflow.com/questions/48693693/macos-safari-caching-response-while-headers-specify-no-caching

https://stackoverflow.com/questions/54326697/safari-caching-get-request-even-with-disabled-cache

https://stackoverflow.com/questions/49547/how-do-we-control-web-page-caching-across-all-browsers/2068353#2068353

https://stackoverflow.com/questions/49547/how-do-we-control-web-page-caching-across-all-browsers/2068407#2068407

https://github.com/rails/rails/issues/32557#issuecomment-381305169

https://github.com/rails/rails/pull/30367

https://stackoverflow.com/questions/24046/the-safari-back-button-problem

https://stackoverflow.com/questions/10744169/rails-set-no-cache-method-cannot-disable-browser-caching-in-safari-and-opera

Fix Safari: https://stackoverflow.com/questions/8788802/prevent-safari-loading-from-cache-when-back-button-is-clicked