Allow getting of some things for past games
Add ended_at to Membership
Implement ended_at DateTime
Allow getting members of a game that is completed
Add prize_money method to Game
Use prize_money method
Show more information for a completed game
Fix logic nesting
Remove to-do comment

It is in a to-do list of mine.
Fix completed games events page
Prefix "Events" with name of game
Safely retrieve participation.game_id
Always show buttons
Do not allow managing of team fees for pregames
Move button to top of events page

It gets really long.