Temporary fix for #1181

[Torvin]

This pull request makes Twidere fall back to non-official keys approach to reading conversation threads, since the 'official' endpoint for this was apparently removed in API v1.1

I was originally planning to base these changes on develop, but unfortunately it's half broken - most screens in settings just make the app crash. So it's based on the last stable version instead (master).

I also had to upgrade Kotlin version since the latest Android Studio refused to build master. I did that in a separate commit for clarity.

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[GranPC]

Thanks for fixing this :)

[LukeDuckwalker]

I understood that this problem is fixed with the 3.7.4 release, but Google Play Store version is at 3.7.3.
I'm sorry to bother but I don't know what to do. How can I get 3.7.4? Should I wait a release on the Play Store?
Thanks in advance

[GranPC]

It's rolling out, I received the update a couple of days ago. Patience is key!

[mariotaku]

Found several crashes. So I'm gonna fix crash issues and release another version.

[LukeDuckwalker]

Ok, thanks a lot for the explanation. I'll wait! :)