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/ExtensionModelPropertyDefn.java
* resource key and <code> IMessages </code> . Otherwise, return name of
	 * this property.
	 * 
	 * @see org.eclipse.birt.report.model.metadata.PropertyDefn#getDisplayName()
	 */
	public String getDisplayName( )
	{
		if ( extProperty.getDisplayNameID( ) != null && messages != null )
		{
			String displayName = messages.getMessage( extProperty
					.getDisplayNameID( ), ThreadResources.getLocale( ) );
			if ( !StringUtil.isBlank( displayName ) )
				return displayName;
		}
		return extProperty.getName( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.metadata.PropertyDefn#getDisplayNameID()
	 */
	public String getDisplayNameID( )
	{
		return extProperty.getDisplayNameID( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.metadata.PropertyDefn#getName()
	 */