Bug 123174 inappropriate column header when inserting a table group
steps to reproduce: - create a table, bind it to an existing data set - insert a table group, e.g. row["CUSTOMERNUMBER"] - drag some data into table detail row - preview report expected behavior: - the column header should be the name of the column actual behavior: - the column header was expr. row["CUSTOMERNUMBER"]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
{
					slotHandle = inputGroup.getHeader( );
				}
				else if ( inputGroup instanceof TableGroupHandle )
				{
					if ( inputGroup.getHeader( ).getCount( ) != 0 )
					{
						RowHandle rowHandle = ( (RowHandle) inputGroup.getHeader( )
								.get( 0 ) );
						CellHandle cellHandle = (CellHandle) rowHandle.getCells( )
								.get( 0 );
						slotHandle = cellHandle.getContent( );
					}
				}
				if ( slotHandle != null )
				{
					DesignElementHandle dataItemHandle = InsertInLayoutUtil.performInsert( newKeyExpr.trim( ),
							slotHandle,
							inputGroup.getContainer( ) );
					slotHandle.add( dataItemHandle );
				}
			}
			index = intervalType.getSelectionIndex( );
			inputGroup.setInterval( intervalChoices[index].getName( ) );
			if ( index != 0 )
			{
				inputGroup.setIntervalRange( intervalRange.getSelection( ) );
			}
			else
			{