API redirects may cause UI to crash

[Rikuoja]

Steps to reproduce:

1. Set the getSettings.js apiBaseUrl to http://api.hel.fi/kerrokantasi-test, which the server will redirect to https as intended.
2. a) Try localhost:8086/hearings/list, the redirect will cause the list to hang. Or
   b) try logging in with the SSO, logging in is not completed. Or
   c) Try localhost:8086/talvipyoraily fullscreen and try POSTing several comments on the map. The comments are not reloaded after POSTing, and Failed to fetch appears.

There may be other urls that the UI will respond to similarly. I have no idea why some redirects will cause the UI to give Failed to fetch or an uncaught promise, while other redirects (the main page, the hearing page) work alright.

[dotanthanh]

I cannot reproduce this. It seems to work just fine to me.