recalculating only the new hanchans shoud do the trick now.

the racalc cronjob reports erronous partly recalculations now.
A lot of code cleanups

src/maistar_ranking/views.py

@@ -78,6 +78,8 @@ class ListPlayerGames(PlayerScore):
     template_name = 'maistar_ranking/player_game_list.html'
     paginate_by = 25
     context_object_name = 'game_list'
+    user = None
+    season = None
 
     def get_context_data(self, **kwargs):
         context = super(ListPlayerGames, self).get_context_data()