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/core/Module.java
* The session that owns this module.
	 */
	protected DesignSession session;
	/**
	 * The number of the next element ID.
	 */
	protected long elementIDCounter = 1;
	/**
	 * The hash map for the id-to-element lookup.
	 */
	protected HashMap idMap = new HashMap( );
	/**
	 * The undo/redo stack for operations on this module.
	 */
	protected ActivityStack activityStack = new ActivityStack( );
	/**
	 * The save state used for dirty file detection. See
	 * {@link org.eclipse.birt.report.model.activity.ActivityStack}for details.
	 */
	protected int saveState = 0;
	/**
	 * The array of name spaces. The meanings of each name space is defined in
	 * {@link org.eclipse.birt.report.model.api.metadata.MetaDataConstants MetaDataConstants}.
	 */
	protected NameSpace nameSpaces[] = new NameSpace[NAME_SPACE_COUNT];
	/**
	 * The array of module name spaces. Each name space has the corresponding
	 * module name space.
	 */
	protected IModuleNameScope moduleNameSpaces[] = new IModuleNameScope[NAME_SPACE_COUNT];