Persist tracks user has listened to and add extra UI to the MapFragment

[MichalGoly]

There should be an idea of a session. For example if a user comes back to Mapify, and navigates to the PlayerFragment, instead of displaying nothing the last track the user listened to should be visible. Ideally it should be paused at the point user left the app last time.

Each track user has listened to should be persisted locally and the history should be visible in the MapFragment for previous days.