Bug 175766 Filter tab on a table is missing the Add buttons
There is no way to add/delete a filter on the table.
UI/org.eclipse.birt.report.designer.ui.views/src/org/eclipse/birt/report/designer/internal/ui/views/attributes/page/FormPage.java
}
	public FormPage( int style, IFormProvider provider, boolean withDialog,
			boolean isTabbed )
	{
		this.style = style;
		this.provider = provider;
		this.withDialog = withDialog;
		this.isTabbed = isTabbed;
	}
	public void buildUI( Composite parent )
	{
		container = new ScrolledComposite( parent, SWT.V_SCROLL );
		container.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		( (ScrolledComposite) container ).setExpandHorizontal( true );
		( (ScrolledComposite) container ).setExpandVertical( true );
		container.addControlListener( new ControlAdapter( ) {
			public void controlResized( ControlEvent e )
			{
				computeSize( );
			}
		} );
		container.addDisposeListener( new DisposeListener( ) {
			public void widgetDisposed( DisposeEvent e )
			{
				deRegisterEventManager( );
			}
		} );
		composite = new Composite( container, SWT.NONE );
		composite.setLayoutData( new GridData( GridData.FILL_BOTH ) );
		if ( sections == null )