Draggable Unit: Fixes for appendTo

Author: DaveStein

tests/unit/draggable/draggable_options.js

@@ -45,7 +45,7 @@ test("{ appendTo: 'parent' }, default", function() {
 
 	TestHelpers.draggable.trackAppendedParent(el);
 
-	equal( el.draggable( "option", "appendTo" ), "parent" );
+	equal( el.draggable( "option", "appendTo" ), null );
 
 	TestHelpers.draggable.move(el, 1, 1);
 	equal( el.data("last_dragged_parent"), $("#qunit-fixture")[0] );

ui/jquery.ui.draggable.js

@@ -568,7 +568,7 @@ if ( $.uiBackCompat !== false ) {
 
 			var el = this.options.appendTo;
 
-			if ( el === "parent" ) {
+			if ( el === "parent" || el === null ) {
 				el = this.dragEl.parent();
 			}