Update the view model for more champion-related statistics
Only show number of wins, etc if there is a current champion
Champion now shows games won / games played

Had to delete and re-add the SetInitialChampions migration as the migration for adding columns needs to be ran first, otherwise the set initial champions migration will fail
can now get the user all the way to the register page. New controller not built yet.
Merge remote-tracking branch 'origin/champion'