Bug 120068 TOC Item Expression is added automatically when adding the group key
Description: TOC Item Expression is added automatically when adding the group key Steps to reproduce: 1.Add a table binding with the dataset 2.Choose the table, add a group(say goupkey:row["CUSTOMERNUMBER"]) 3.Click "group" to invoke "Edit Group" dialog Expected result: Nothing in TOC Item Expression Actual result: The group key (row["CUSTOMERNUMBER"]) is added to the TOC Item Expression
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/GroupDialog.java
inputGroup = (GroupHandle) input;
	}
	/**
	 * Sets the dataset list to use.
	 * 
	 * @param dataSetList
	 */
	public void setDataSetList( List dataSetList )
	{
		this.dataSetList = dataSetList;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
	 */
	protected void okPressed( )
	{
		try
		{
			inputGroup.setName( nameEditor.getText( ) );
			String newExpr = exprEditor.getText( );
			if ( newExpr != null && !newExpr.equalsIgnoreCase( oldExpr ) )
			{
				inputGroup.setTocExpression( newExpr );
			}
			int index = keyChooser.getSelectionIndex( );
			String oldKey = inputGroup.getKeyExpr( );
			String newKey = null;
			if ( index == -1 )