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
else if ( transferData instanceof EmbeddedImageHandle )
			{
				if ( targetObj instanceof ReportDesignHandle
						&& ( (EmbeddedImageHandle) transferData ).getElementHandle( )
								.getRoot( ) instanceof LibraryHandle )
					return CONTAIN_THIS;
				else if ( targetObj instanceof EmbeddedImageNode )
					return CONTAIN_THIS;
				else
					return CONTAIN_NO;
				
				
			}
			else
			{
				return CONTAIN_NO;
			}
		}
	}
	public static boolean handleValidateTargetCanContainStructure(
			Object targetObj, IStructure transferData )
	{
		if ( targetObj instanceof EmbeddedImageNode )
		{
			targetObj = ( (EmbeddedImageNode) targetObj ).getReportDesignHandle( );
		}
		if ( transferData instanceof EmbeddedImage
				&& targetObj instanceof ModuleHandle )
		{