anchor.diff:      _allPages = <_Page>[_friends, _kata, _me];
       _tabController = new TabController(vsync: this, length: _allPages.length);
       _tabController.addListener(_handleTabSelection);
  -    _selectedPage = _me;
  +    _selectedPage = _allPages.first;
     }
   
     @override
  
positive.code:         tooltip: "Add friend",
          icon: new Icon(_isRefreshingNewFriend ? Icons.adjust : Icons.done),
          onPressed: () {
            setState(() {
              _isRefreshingNewFriend = true;
            });
            get(CodeWarsAPI.getUser(_friendNameController.text))
              ..then((val) =>
                  setState(() {
  
negative.code:     }
      List<Widget> _friendsView = _friendUsers.map((user) =>
      new ExpansionTile(
        leading: new IconButton(
          icon: new Icon(_refreshingFriend == user ? Icons.adjust : Icons.refresh),
          onPressed: () {
            setState(() => _refreshingFriend = user);
            get(CodeWarsAPI.getUser(user.username))
              ..then((val) =>
                  setState(() {
                    int index = _friendUsers.indexOf(user);
                    _friendUsers.removeAt(index);
                    _friendUsers.insert(index, _json2user(val.body));
                    // TODO add him to the database
                    _refreshingFriend = null;
                  }))
              ..timeout(new Duration(seconds: 10))
              ..catchError(() =>
                  setState(() {
                    _pop();
                    _refreshingFriend = null;
                  }));
          },),
        title: new ListTile(
          title: new Text(
            user.name,
  