Completely rearranged buff system (system can smartly check for the best
statup to take effect for it's duration, or the server can be flagged to
act as usual). Refactored scheduling system for buffs expiration and
cooldowns to use one single thread per player rather than one per
instance.
Reworked autoassigner (improved limits between required secondary and
surplus primary stats). Hero's will removes most of diseases, tonic
removes slow. Added visual info for collected NX cards. Added commands
cake (cake boss with customizable HP) and setgmlevel. Reworked Trade
system now checking for slots smartly (instead of just checking for
empty slots).