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
* 
	 * @see IModuleNameScope#resolve(String, PropertyDefn)
	 */
	public DesignElement resolveElement( String elementName, int nameSpace,
			PropertyDefn propDefn )
	{
		ElementRefValue refValue = moduleNameSpaces[nameSpace].resolve(
				elementName, propDefn );
		return refValue.getElement( );
	}
	/**
	 * Resolves element with the given element name and name space.
	 * <code>propDefn</code> gives the information that how to resolve the
	 * <code>elementName</code>.
	 * 
	 * @param element
	 *            the element
	 * @param nameSpace
	 *            name space
	 * @param propDefn
	 *            the property definition
	 * @return the resolved element if the name can be resolved, otherwise,
	 *         return null.
	 * 
	 * @see IModuleNameScope#resolve(String, PropertyDefn)
	 */
	public DesignElement resolveElement( DesignElement element, int nameSpace,
			PropertyDefn propDefn )
	{
		ElementRefValue refValue = moduleNameSpaces[nameSpace].resolve(