Bug 156632 [Acceptance]Cannot paste theme when select Themes in Outline.
Description: Cannot paste theme when select Themes in Outline. Steps to reproduce: 1. New a library. 2. Select defaulttheme in outline and cut it 3. Select Themes and right click to paste the theme back. Expected result: Paste in context menu can be used. Actual result: Paste is gray
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
Object targetObj, boolean isNew )
	{
		try
		{
			int columnNumber = HandleAdapterFactory.getInstance( )
					.getColumnHandleAdapter( targetObj )
					.getColumnNumber( );
			Object parent = ( (ColumnHandle) targetObj ).getContainer( );
			if ( parent instanceof TableHandle )
			{
				if ( isNew )
				{
					( (TableHandle) parent ).insertAndPasteColumn( transferData.copy( ),
							columnNumber );
				}
				else
				{
					( (TableHandle) parent ).pasteColumn( transferData.copy( ),
							columnNumber,
							true );
				}
			}
			else if ( parent instanceof GridHandle )
			{
				if ( isNew )
				{
					( (GridHandle) parent ).insertAndPasteColumn( transferData.copy( ),
							columnNumber );
				}
				else