Fixes chat (#265)

- [X] Fixes crash from chat and newer clients
- [X] Fixes issue with fake names being used
- [X] Fixes potential issue with RawName being null
- [X] Adds chat to modernuo.json settings
- [X] Removes old chat
- [X] Removes chat event sink since it probably isn't needed.

Bumps release version

Projects/UOContent/Engines/Chat/ChatActionHandlers.cs

@@ -1,3 +1,5 @@
+using System;
+
 namespace Server.Engines.Chat
 {
     public class ChatActionHandlers