added timeout response (status 408)

+ added EPOLLERR and EPOLLHUP handling
+ fix root substitution for default "/" location (temp or permanent ?)
+ tested siege a little, seems good

srcs/webserv/response.cpp

@@ -21,7 +21,7 @@ void	Webserv::_response(Client *client)
 	}
 	else if (ret == SEND_COMPLETE)
 	{
-		if (client->get_rq_headers("Connection") == "close")
+		if (client->get_rq_headers("Connection") == "close" || client->status == 408)
 			_close_client(client->get_cl_fd());
 		else
 		{