Bug 191199 [Regression] Rule and Margin in masterpage isn't aligned
Description: New a report design file, go to the master page tab, you will find the rule and margin is not aligned. Build version:2.2.0.v20070606-0630
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/layout/AbstractPageFlowLayout.java
{
	public static final int MINLEFTSPACE = 20;
	public static final int MINRIGHTSPACE = 20;
	public static final int MINTOPSPACE = 20;
	public static final int MINBOTTOMSPACE = 20;
	private GraphicalEditPart owner;
	private Rectangle initSize = new Rectangle( );
	private Insets initInsets = new Insets( );
	private Rectangle comsiteBounds = new Rectangle( );
	/**
	 * @param owner