Integrate full-featured reporting system

[ACRA](https://github.com/ACRA/acra) is too basic and lacks useful features. [Firebase Crashlytics](https://firebase.google.com/docs/crashlytics/) is de-facto standard for modern Android development. Opensource [Matomo](https://matomo.org/) can be considered as an alternative. [AppDynamics](https://www.appdynamics.com/) can be considered, too.

The issue names no files, entry points, or tests; start by locating the existing ACRA integration and documenting its current reporting scope. Before implementation, clarify which provider and features are required; done should mean the agreed reporting system is integrated and verified.

Written by the indexing model from the issue text.