Bug 120216 Group dialog should be showed even dataset is not set.
- Add a table report item - do not set the data set - try creating a new table group. - An error is shown Expected behavior - As part of the template requirements, we dont want UI to do the validation. User should be able to go and define a group, even if the dataset is not defined.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
* 
	 * @param folderHandle
	 *            the folder handle to create a folder resource for
	 * @param monitor
	 *            the progress monitor to show visual progress with
	 * @exception CoreException
	 *                if the operation fails
	 * @exception OperationCanceledException
	 *                if the operation is canceled
	 */
	public static void createFolder( IFolder folderHandle,
			IProgressMonitor monitor ) throws CoreException
	{
		try
		{
			
			
			
			if ( !folderHandle.exists( ) )
			{
				IPath path = folderHandle.getFullPath( );
				IWorkspaceRoot root = ResourcesPlugin.getWorkspace( ).getRoot( );
				int numSegments = path.segmentCount( );
				if ( numSegments > 2
						&& !root.getFolder( path.removeLastSegments( 1 ) )
								.exists( ) )
				{