Refactored fat games controller into game model

Also removed references to longest streaks (these are going to be
difficult to roll back)
Cleaned up streak calculation
Mobile menu fix
Fixed outdated way of showing current user
Support for deleting games

This is restricted to games that have no dependent games (the teams
involved have not played again)
Showing wins along with points
Refactored point calculation

Created game REST action to calculate points of a simulated game