Weblate translations for Android app

Just a heads up, I have locked the app string translations currently. Was hoping to get i18n: Indirect string-array declarations through arrays.xml by acolomb · Pull Request #2012 · syncthing/syncthing-android · GitHub merged rather quickly, without getting new conflicts because of incoming Weblate translation changes. However I’m still waiting for a review approval there.

The background is that Weblate doesn’t support “string-array” elements in the Android XML resource files, therefore all these strings are currently missing on the platform.