* Changed message_floodguard logic, ...
Resolve#3
The client individual client timer was ignored in favor of the area timer as it wouldn't make a lot of sense to have 3 different timers for game messages.
* Changed message_floodguard to only affect the area in which the message was sent rather than globally. The default value is 250ms.
* Added global_message_floodguard, this restores the previous functionality of message_floodguard. The default value is 0ms.
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