new GameQuerySet class to be used with django-model-utils
add new queries to GameQuerySet
move Game.expired property to GameQuerySet
new GameCommentQuerySet class
add new class PlayerQuerySet
change manager of Player class
refactor SummaryView
refactor MyActiveGamesView view
refactor MyFinishedGamesList view
new manager for Revolution class
refactor RevolutionList view
move player_list_ordered_by_cities to custom query and optimize it
new human() filter in PlayerQuerySet
add convenience functions get_game_or_404 and get_player_or_404
convert most of the views to class based views
remove unused imports
migrate game creation to class based views
convert some function based views to class based views