Update to MGE 2.0

New Features
-2v2 arenas
-KOTH arenas
-Turris arenas
-Ultiduo arenas
-!swap command in ultiduo that allows you to ask your teammate to swap
classes with you
-!top5 is now a navigable ELO ranking menu that lets you view all
players in the database

Bug fixes
-Flag in bball is now actually a flag instead of an ammopack

Removed features
-Advanced stats