Add ability to sort players and games

[NoMan2000]

• Add the ability to click on a button and sort by the statistics for the player.
• Add the same ability to click on a button in the game section and sort by game statistics.

The player statistics are done because they're easy, it's binary sorting, by name, by game, etc.

Sorting the games is more difficult since the games are non-binary, i.e. people probably want to see games for a particular user, or games on a specific date or date-range, so there's more to sort and then the decision of what to display. Do we just do a sort or do we do a sort and filter?