Kubernetes 1.8 reference docs (#5632)

* Kubernetes 1.8 reference docs

* Kubectl reference docs for 1.8

* Update side bar with 1.8 kubectl and api ref docs links

docs/api-reference/v1.8/node_modules/jquery.scrollto/tests/test.js

@@ -0,0 +1,21 @@
+$.fn.test = function(){
+	// Hide title on iframes
+	if (window.self !== window.top) {
+		$('h1').hide();
+	}
+
+	if (location.search === '?notest') {
+		return this;
+	}
+
+	$.scrollTo.defaults.axis = 'xy';
+	
+	var root = this.is('iframe') ? this.contents() : $('body');
+	root.find('#ua').html(
+		navigator.userAgent +
+		'<br />' +
+		'document.compatMode is "' + document.compatMode + '"'
+	);
+
+	return this.scrollTo('max', 1000).scrollTo(0, 1000);
+};