Bug 152412 [Smoke]Insert,delete a master page, can not take effect
Insert,delete a master page, can not take effect Steps: 1.new a report 2.open outline view, insert a master page or delete a master page Actual Results 1.Can not take effect.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/GraphicsViewModelEventProcessor.java
| type == NotificationEvent.LIBRARY_EVENT
				| type == NotificationEvent.THEME_EVENT
				| type == NotificationEvent.CONTENT_REPLACE_EVENT
				| type == NotificationEvent.TEMPLATE_TRANSFORM_EVENT
				| type == NotificationEvent.ELEMENT_LOCALIZE_EVENT
				| type == NotificationEvent.LIBRARY_RELOADED_EVENT;
	}
	/**Process the content model event
	 * ContentModelEventInfo
	 */
	protected static class ContentModelEventInfo extends ModelEventInfo
	{
		
		private ContentModelEventInfo( DesignElementHandle focus, NotificationEvent ev )
		{	
			super(focus, ev);
			assert ev instanceof ContentEvent;
			setTarget( focus );
			setType( ev.getEventType( ) );
			setContentActionType( ((ContentEvent)ev).getAction( ) );
			addChangeContents( ((ContentEvent)ev).getContent( ) );
		}
		/* (non-Javadoc)
		 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.GraphicsViewModelEventProcessor.ModelEventInfo#canAcceptModelEvent(org.eclipse.birt.report.model.api.DesignElementHandle, org.eclipse.birt.report.model.api.activity.NotificationEvent)
		 */
		public boolean canAcceptModelEvent( ModelEventInfo info )
		{
			if (getContentActionType( ) == ContentEvent.REMOVE && getChangeContents( ).contains( info.getTarget( ) ))
			{
				return true;