Improvements:
- Upgrade MatrixKit version (v0.7.15).
- RoomVC: Add a re-request keys button on message unable to decrypt (#1879).
- Analytics: Move code from AppDelegate to a dedicated class: Analytics.
- Analytics: Track Matrix SDK stats (time to startup the app).
- Crypto: Add telemetry for events unable to decrypt (UTDs).
- Added the i18n localisation strings to the accessibility labels (#1842), thanks to @einMarco (PR#1906).
- Added titles to sound files ID3 tags.
Bug fix: