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/ImageBuilder.java
embeddedImageList.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent event )
			{
				preview( );
				updateButtons( );
			}
		} );
		Composite buttonBar = new Composite( inputArea, SWT.NONE );
		buttonBar.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		buttonBar.setLayout( new GridLayout( 2, false ) );
		Button importButton = new Button( buttonBar, SWT.PUSH );
		importButton.setText( DLG_IMPORT_BUTTON );
		GridData gd = new GridData( GridData.HORIZONTAL_ALIGN_END );
		gd.grabExcessHorizontalSpace = true;
		importButton.setLayoutData( gd );
		importButton.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent event )
			{
				FileDialog fileChooser = new FileDialog( getShell( ), SWT.OPEN );
				fileChooser.setText( Messages.getString( "ImageBuilder.Chooser.Title" ) ); 
				fileChooser.setFilterExtensions( IMAGE_FILEFILTERS );
				try
				{
					String fullPath = fileChooser.open( );
					if ( fullPath != null )
					{
						String fileName = fileChooser.getFileName( );
						if ( fileName != null )
						{
							if ( embeddedImageList.indexOf( fileName ) != -1 )