changed error handling of response_handler * more logging into the system journal * enhanced answers to journal-gateway-zmtp-control * checking on every write, whether the pipe still works 	* this leads to the dropping of one message, if the pipe is broken
changed error handling of response_handler
* more logging into the system journal
* enhanced answers to journal-gateway-zmtp-control
* checking on every write, whether the pipe still works
	* this leads to the dropping of one message, if the pipe is broken

ContentSafe/journal-gateway-zmtp,ContentSafe/journal-gateway-gelf,travelping/journal-gateway-gelf,travelping/journal-gateway-gelf,travelping/journal-gateway-zmtp,ContentSafe/journal-gateway-gelf,ContentSafe/journal-gateway-zmtp,travelping/journal-gateway-zmtp