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/ui/dialogs/GroupDialog.java
if ( inputGroup instanceof TableGroupHandle )
		{
			includeHeader.setSelection( inputGroup.hasHeader( ) );
			includeFooter.setSelection( inputGroup.hasFooter( ) );
		}
		else
		{
			includeHeader.setSelection( false );
			includeFooter.setSelection( false );
		}
		if ( DesignChoiceConstants.SORT_DIRECTION_ASC.equals( inputGroup.getSortDirection( ) ) )
		{
			ascending.setSelection( true );
		}
		else
		{
			descending.setSelection( true );
		}
		List list = new ArrayList( 1 );
		list.add( inputGroup );
		
		tocEditor.setText( UIUtil.convertToGUIString( inputGroup.getTocExpression( ) ) );
		return true;
	}
	/**
	 * Sets the model input.
	 * 
	 * @param input
	 */
	public void setInput( Object input )