IntegerDocument: Fix number can be larger than the integer max value
HagglePanel: Rename tradePlayerMoney to tradeUserMoney - missed in b295c1ad07e0d9162cd879b7abf21071423b15bb
Merge remote-tracking branch 'origin/MilestoneTwo' into MilestoneTwo
Implement that a player can't have a negative money
use SwingUtilities.invokeLater for the events
change CardData to MessageData