Bug 142432 MasterPage from library can't be restored to modify
Details: MasterPage from library can't be restored to modify Step: 1.New a library named lib1, and insert a masterpage named lib-mp. 2.Publish the library into resource folder. 3.New a report design and use lib1. 4.Drop the lib-mp from library explorer into outline of report design. 5.Double click lib-mp, and switch to Property editro tab. 6.Click restore. Actual result: Pop up an error message and said that the master page cannot specify size the page type is not custom.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/SimpleGroupElementHandle.java
{
			IElementPropertyDefn propDefn = (IElementPropertyDefn) list.get( i );
			if ( isPropertyVisible( propDefn.getName( ) ) )
			{
				visibleList.add( propDefn );
			}
		}
		return new GroupPropertyIterator( visibleList );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.GroupElementHandle#isPropertyVisible(java.lang.String)
	 */
	protected boolean isPropertyVisible( String propName )
	{
		List elements = getElements( );
		for ( int i = 0; i < elements.size( ); i++ )
		{
			PropertyHandle propertyHandle = ( (DesignElementHandle) elements
					.get( i ) ).getPropertyHandle( propName );
			
			
			
			if ( propertyHandle != null && !propertyHandle.isVisible( )
					|| propertyHandle == null )
				return false;
		}