Make Message Handler / Message Processing "optional"

[clauspruefer]

Add configuration option (database)

INSERT INTO system.config (config_group, "value") VALUES ('message_handler', 'true');

Implement here

x0/www/sysInitOnLoad.js

Lines 190 to 195 in a15988c

	//----------------------------------------------------------------------------
	//- Start Async Notify Message Handler
	//----------------------------------------------------------------------------
	sysFactory.sysGlobalAsyncNotifyHandler = new sysAsyncNotifyMsgHandler();

if (ConfigOption !== undefined && ConfigOption === true) {
}