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/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 {