Restructure repo layout and document conventions

Move legacy systemscripts into scripts/display and scripts/setup.
Rehome stray top-level tools into their domain folders.
Archive narrow experiments and outdated codegrab leftovers.
Remove empty legacy directories and stale root files.
Expand macOS metadata ignores and update the README with the refined repository structure.

archive/experimental/screenshot.js

@@ -0,0 +1,53 @@
+//Requires PhantomJS
+//Install with apt install phantomjs
+
+var system = require('system');
+var args = system.args;
+
+if (args.length === 1) {
+  console.log('Try to pass some arguments when invoking this script!');
+} else {
+  args.forEach(function(arg, i) {
+    console.log(i + ': ' + arg);
+  });
+}
+var scriptname=args.shift()
+urls=args.slice(1)
+// var urls = [
+// 		"http://www.google.de",
+// 		"http://heise.de",
+// 		"https://www.test.de"
+// 	]
+var	webpage = require('webpage'),
+	page = webpage.create(),
+  // page.width=1920;
+	nr = 0;
+  page.viewportSize = {width: 1920, height: 15000};
+// Seitendimensionen ggf. anpassen
+
+
+var screenshot = function() {
+	if (!urls.length) phantom.exit();
+	var _url = urls.shift();
+	console.log('Öffne Seite ' + (nr+1) + ': ' + _url);
+	page.open(_url, function(status) {
+		if (status !== 'success') {
+			console.log('Netzwerkproblem: ' + status);
+			urls.unshift(_url);
+			setTimeout(screenshot, 1000);
+		} else {
+			++nr;
+			page.evaluate(function() {
+				var style = document.createElement('style'),
+					bg = document.createTextNode('body {background: #fff}; html {width: 1000px};');
+				style.setAttribute('type', 'text/css');
+				style.appendChild(bg);
+				document.head.insertBefore(style, document.head.firstChild);
+			});
+			page.render('screenshot_' + nr + '_' + Date.now() + '.jpg', {format: 'jpeg', quality: 80});
+			setTimeout(screenshot, 2000);
+		}
+	});
+}
+
+screenshot();