* Update Game.java
Adding ShiftDropping to items with the wield option as default.
The options still have double Drop like the shiftdrop for use option as default.
* Trade issues
Resolved issues around the trading system:
1. Can't trade anymore when other player isn't close;
2. Trade interface now close when other player disconnect or click the minimap;
3. Players cant no longer store items in the trade interface;
4. Items are properly distributed after any player closes the trade interface;
5. Added a message saying 'Trade completed.' after a trade is completed;
Gptaqbc