Button: Move button into widgets folder

Ref #13885

demos/bootstrap.js

@@ -26,7 +26,8 @@ var effectsAll = [
];
var widgets = [
	"accordion",
	"autocomplete"
	"autocomplete",
	"button"
];

function getPath( module ) {

tests/unit/button/common.js

@@ -1,6 +1,6 @@
define( [
	"lib/common",
	"ui/button"
	"ui/widgets/button"
], function( common ) {

common.testWidget( "button", {

tests/unit/button/core.js

@@ -1,6 +1,6 @@
define( [
	"jquery",
	"ui/button"
	"ui/widgets/button"
], function( $ ) {

module("button: core");

tests/unit/button/events.js

@@ -1,6 +1,6 @@
define( [
	"jquery",
	"ui/button"
	"ui/widgets/button"
], function( $ ) {

module("button: events");

tests/unit/button/methods.js

@@ -1,6 +1,6 @@
define( [
	"jquery",
	"ui/button"
	"ui/widgets/button"
], function( $ ) {

module("button: methods");

tests/unit/button/options.js

@@ -1,6 +1,6 @@
define( [
	"jquery",
	"ui/button"
	"ui/widgets/button"
], function( $ ) {

module( "button: options" );

ui/dialog.js

@@ -26,7 +26,7 @@
			"./version",
			"./keycode",
			"./widget",
			"./button",
			"./widgets/button",
			"./draggable",
			"./focusable",
			"./mouse",

ui/spinner.js

@@ -26,7 +26,7 @@
			"./keycode",
			"./safe-active-element",
			"./widget",
			"./button"
			"./widgets/button"
		], factory );
	} else {

ui/button.js → ui/widgets/button.js

@@ -22,11 +22,11 @@
		// AMD. Register as an anonymous module.
		define([
			"jquery",
			"./data",
			"./keycode",
			"./labels",
			"./version",
			"./widget"
			"../data",
			"../keycode",
			"../labels",
			"../version",
			"../widget"
		], factory );
	} else {