Core/Network: Changed AsyncAcceptor to have a start method that returns false if it can't start the network.

Core/Logging: Cleaned up network logging.

Source/WorldServer/WorldServer.conf.dist

@@ -140,7 +140,7 @@ PacketLogFile = "CypherCore.pkt"
 #
 
 Appender.Console = 1,3,0
-Appender.Server = 2,2,0
+Appender.Server = 2,1,0
 Appender.GM = 2,2,0,gm/gm_{0}.log
 Appender.DBErrors = 2,4,0,DBErrors.log
 
@@ -167,7 +167,7 @@ Logger.ServerLoading = 3,Console Server
 Logger.Commands = 3,Console GM
 Logger.Sql = 3,Console DBErrors
 Logger.SqlUpdates = 3,Console Server
-Logger.Network = 1,Console Server
+Logger.Network = 3,Console Server
 
 #Logger.Achievement=3,Console Server
 #Logger.AreaTrigger=3,Console Server