Chat strings are now sanitized.

* Only plain, printable ASCII is allowed for now.
* Local chat is now printed to the server console, but group chat is
still private
* Added a helper function to print character names and IDs

src/ChatManager.hpp

@@ -26,4 +26,6 @@ namespace ChatManager {
     void emoteHandler(CNSocket* sock, CNPacketData* data);
     void menuChatHandler(CNSocket* sock, CNPacketData* data);
     void sendServerMessage(CNSocket* sock, std::string msg); // uses MOTD
+
+    std::string sanitizeText(std::string text);
 }