Logbuffer (#298)

* - implement a global logbuffer
- providerrs232 reduce log spam

* logger add signal and start json push

* implement logger notifier ... need some cleanup

* imlement logview in webui - the layout stuff is basic atm and needs some tuning

assets/webconfig/js/content_logging.js

@@ -0,0 +1,24 @@
+
+$(document).ready(function() {
+	requestLoggingStart();
+	if (!loggingHandlerInstalled)
+	{
+		loggingHandlerInstalled = true;
+		$(hyperion).on("cmd-logging-update",function(event){
+			if ($("#logmessages").length == 0)
+			{
+				requestLoggingStop();
+			}
+			else
+			{
+				messages = (event.response.result.messages);
+				for(var idx=0; idx<messages.length; idx++)
+				{
+					msg = messages[idx];
+					$("#logmessages").html($("#logmessages").html()+"\n"+msg);
+					
+				}
+			}
+		});
+	}
+});