Demos: Add new infrastructure using a require.js bootstrap

Fixes #10119
Closes gh-1557

Gruntfile.js

@@ -205,9 +205,18 @@ grunt.initConfig({
 	},
 	uglify: minify,
 	htmllint: {
-		good: [ "demos/**/*.html", "tests/**/*.html" ].concat( htmllintBad.map( function( file ) {
+		good: [ "tests/**/*.html" ].concat( htmllintBad.map( function( file ) {
 			return "!" + file;
 		} ) ),
+		demos: {
+			options: {
+				ignore: [
+				/The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “.” instead/
+			] },
+			src: [ "demos/**/*.html" ].concat( htmllintBad.map( function( file ) {
+				return "!" + file;
+			} ) )
+		},
 		bad: {
 			options: {
 				ignore: [

demos/bootstrap.js

@@ -0,0 +1,60 @@
+/* globals window:true, document:true */
+( function() {
+
+// Find the script element
+var scripts = document.getElementsByTagName( "script" );
+var script = scripts[ scripts.length - 1 ];
+
+// Read the modules
+var modules = script.getAttribute( "data-modules" );
+var pathParts = window.location.pathname.split( "/" );
+var effectsAll = [
+	"effect-blind",
+	"effect-bounce",
+	"effect-clip",
+	"effect-drop",
+	"effect-explode",
+	"effect-fade",
+	"effect-fold",
+	"effect-highlight",
+	"effect-puff",
+	"effect-pulsate",
+	"effect-scale",
+	"effect-shake",
+	"effect-size",
+	"effect-slide"
+];
+
+// Hide the page while things are loading to prevent a FOUC
+document.documentElement.className = "demo-loading";
+
+require.config( {
+	baseUrl: "../../ui",
+	paths: {
+		jquery: "../external/jquery/jquery",
+		external: "../external/"
+	},
+	shim: {
+		"external/globalize/globalize.culture.de-DE": [ "external/globalize/globalize" ],
+		"external/globalize/globalize.culture.ja-JP": [ "external/globalize/globalize" ]
+	}
+} );
+
+// Replace effects all shortcut modules with all the effects modules
+if ( modules && modules.indexOf( "effects-all" ) !== -1 ) {
+	modules = modules.replace( /effects-all/, effectsAll.join( " " ) );
+}
+
+modules = modules ? modules.replace( /^\s+|\s+$/g, "" ).split( /\s+/ ) : [];
+modules.push( pathParts[ pathParts.length - 2 ] );
+
+require( modules, function() {
+	var newScript = document.createElement( "script" );
+
+	document.documentElement.className = "";
+
+	newScript.text = "( function() { " + script.innerHTML + " } )();";
+	document.head.appendChild( script ).parentNode.removeChild( script );
+} );
+
+} )();

demos/demos.css

@@ -2,6 +2,10 @@ body {
 	font-family: Arial, Helvetica, sans-serif;
 }
 
+.demo-loading {
+	visibility: hidden;
+}
+
 table {
 	font-size: 1em;
 }