Bug 155509 ModuleHandle findResource method does not support .properties files
There is no fileType for .properties files in IResourceLocator
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* Returns the embedded images which are defined on the module itself. The
	 * embedded images defined in the included libraries will not be returned by
	 * this method.
	 * 
	 * @return the local embedded image list.
	 */
	public List getVisibleImages( )
	{
		List images = getNativeStructureList( Module.IMAGES_PROP );
		return images;
	}
	/**
	 * Returns all page handles that this modules and the included modules
	 * contain.
	 * 
	 * @return all page handles that this modules and the included modules
	 *         contain.
	 */
	public List getAllPages( )
	{
		List elementList = module.getNameSpace( Module.PAGE_NAME_SPACE )
				.getElements( );
		return generateHandleList( elementList );
	}
	/**
	 * Returns all parameter handles that this modules.
	 * 
	 * @return all parameter handles that this modules.
	 */
	public List getAllParameters( )