Bug 120317 Set "dimension" property to 3D in "properties" view, error appears in layout editor.
Description: Set "dimension" property to 3D in "properties" view, error appears in layout editor. Steps to reproduce: 1. Add a 2D chart in property editor. 2. Set its dimension property to "three-dimension" in properties view. 3. Error appears in chart.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/ExtensionLoader.java
* 
		 * @throws MetaDataException
		 */
		void loadPropertyGroup( IConfigurationElement elementTag,
				IConfigurationElement propGroupTag,
				ExtensionElementDefn elementDefn, List propList )
				throws MetaDataException
		{
			String displayNameID = propGroupTag
					.getAttribute( DISPLAY_NAME_ID_ATTRIB );
			String groupName = propGroupTag.getAttribute( NAME_ATTRIB );
			String defaultDisplayName = propGroupTag
					.getAttribute( DEFAULT_DISPLAY_NAME_ATTRIB );
			checkRequiredAttribute( NAME_ATTRIB, groupName );
			IConfigurationElement[] elements = propGroupTag.getChildren( );
			for ( int i = 0; i < elements.length; i++ )
			{
				if ( PROPERTY_TAG.equalsIgnoreCase( elements[i].getName( ) ) )
				{
					ExtensionPropertyDefn extPropDefn = loadProperty(
							elementTag, elements[i], elementDefn );
					extPropDefn.setGroupName( groupName );
					extPropDefn.setGroupNameKey( displayNameID );
					extPropDefn.setGroupDefauleDisplayName( defaultDisplayName );
					elementDefn.addProperty( extPropDefn );
				}
			}
		}
	}
}