Make analytics optional+anonymized or even better: get rid of them entirely

[Maykeye]

Issue description:

Right now joining leaks the server(and port on which it's running) and player ID to google-analytics

CustomNPC-Plus/src/main/java/noppes/npcs/ServerTickHandler.java

Lines 41 to 47 in 7a4ced1

	e += ":" + server.getPort();
	}
	if (e == null || e.startsWith("192.168") || e.contains("127.0.0.1") || e.startsWith("localhost"))
	e = "local";
	serverName = e;
	}
	AnalyticsTracking.sendData(event.player, "join", serverName);

CustomNPC-Plus/src/main/java/noppes/npcs/client/AnalyticsTracking.java

Lines 19 to 31 in 7a4ced1

	UUID uuid = player.getUniqueID();
	String analyticsPostData = "v=1" +
	"&tid=UA-29079943-5" +
	"&cid=" + uuid.toString() +
	"&t=event" +
	"&ec=customnpcs_1.7d" +
	"&ea=" + event +
	"&el=" + data +
	"&ev=300";
	URL url = new URL("http://www.google-analytics.com/collect");
	HttpURLConnection connection = (HttpURLConnection) url.openConnection();

This is not necessary, not configurable(compare to version checker)
and it sends data to original customnpc mod anyway