populate zeroconf/avahi/bonjour records via json api (#419)

* start of integrating a bonkour service browser

* some experiments

* blub

* bonjour browser via jsonrpc ...

* fix indention

* - make leddevice as component
- extend sysinfo with domain
- add more data for  bonjour browser (e.g. split domain and hostname)

* code cleanup

* add translation

* use component names instead of ids

* fix compile

libsrc/jsonserver/schema/schema-componentstate.json

@@ -21,7 +21,7 @@
 				"component":
 				{
 					"type" : "string",
-					"enum" : ["SMOOTHING", "BLACKBORDER", "KODICHECKER", "FORWARDER", "UDPLISTENER", "BOBLIGHTSERVER", "GRABBER", "V4L"],
+					"enum" : ["SMOOTHING", "BLACKBORDER", "KODICHECKER", "FORWARDER", "UDPLISTENER", "BOBLIGHTSERVER", "GRABBER", "V4L", "LEDDEVICE"],
 					"required": true
 				},
 				"state":