anchor.diff:  @Injectable()
   class FirebaseService {
     fb.User user;
  -//  List<Goal> goals;
     fb.DatabaseReference _fbRefYears;
     fb.Auth _fbAuth;
     fb.GoogleAuthProvider _fbGoogleAuthProvider;
     fb.Database _fbDatabase;
  -//  fb.DatabaseReference _fbRefGoals;
     List<Year> years;
  +  String password;
  +  fb.DatabaseReference fbPass;
   
     FirebaseService(){
       fb.initializeApp(
  
positive.code: //      await _fbRefYears.limitToLast(20).onChildAdded.listen(_newYear);
  //    }
  //  }
  
    Future _newYear(fb.QueryEvent e) async{
      fb.DataSnapshot data = e.snapshot;
  
negative.code:         .set(val.value);
    }
  
    Future changePass(String s) async {
      await fbPass.child("password").set(s);
    }
  
    Future deleteGoal(String key1, String key2) async {
      try {
        await _fbRefYears.child(key1).child("goals").child(key2).remove();
  