Bug 144378 There is no checkbox for user to bind a dynamic image
Description: Create a dynamic image, there is no checkbox for user to bind the column of dataset. Steps to reproduce: 1.Create a sample datasource and dataset with "select * from CLASSICMODELS.PRODUCTLINES". 2.Add a image to the report layout, select dynamic image type, and then click "Binding" button, select the dataset, and want to bind a column. But there is no checkbox for user to do this action. Expected result: Like data item, there is a checkbox for user to bind the column.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
{
	private static final String MSG_ADD = Messages.getString( "ColumnBindingDialog.Text.Add" );
	private static final String MSG_EDIT = Messages.getString( "ColumnBindingDialog.Text.Edit" );
	private static final String MSG_DELETE = Messages.getString( "ColumnBindingDialog.Text.Del" );
	private static final String DEFAULT_COLUMN_NAME = "[result_set_col_name]"; 
	private static final String dummyChoice = "dummy"; 
	public static final String DEFAULT_DLG_TITLE = Messages.getString( "ColumnBindingDialog.DialogTitle" ); 
	private static final String ALL = Messages.getString( "ColumnBindingDialog.All" );
	private static final String NONE_AGGREGATEON = Messages.getString( "ColumnBindingDialog.AGGREGATEON.NONE" );
	private static final String CHOICE_FROM_CONTAINER = Messages.getString( "ColumnBindingDialog.Choice.FromContainer" );
	private static final String CHOICE_NONE = Messages.getString( "ColumnBindingDialog.NONE" );
	private static final String LABEL_COLUMN_BINDINGS = Messages.getString( "ColumnBindingDialog.Label.DataSet" ); 
	private static final String WARN_COLUMN_BINDINGS = Messages.getString( "ColumnBingingDialog.Label.Warn" ); 
	
	
	private static final String COLUMN_NAME = Messages.getString( "ColumnBindingDialog.Column.Name" ); 
	private static final String COLUMN_DISPLAYNAME = Messages.getString( "ColumnBindingDialog.Column.displayName" );
	private static final String COLUMN_DATATYPE = Messages.getString( "ColumnBindingDialog.Column.DataType" ); 
	private static final String COLUMN_EXPRESSION = Messages.getString( "ColumnBindingDialog.Column.Expression" ); 
	private static final String COLUMN_AGGREGATEON = Messages.getString( "ColumnBindingDialog.Column.AggregateOn" ); 
	private static final String INPUT_PROPMT = Messages.getString( "ColumnBindingDialog.InputPrompt" ); 
	private static final IChoiceSet DATA_TYPE_CHOICE_SET = DEUtil.getMetaDataDictionary( )
			.getStructure( ComputedColumn.COMPUTED_COLUMN_STRUCT )
			.getMember( ComputedColumn.DATA_TYPE_MEMBER )
			.getAllowedChoices( );
	private static final IChoice[] dataTypes = DATA_TYPE_CHOICE_SET.getChoices( null );