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
* @param propName
	 *            the property name to find
	 * @return the matched property binding defined in the module, otherwise
	 *         null
	 */
	public PropertyBinding findPropertyBinding( DesignElement element,
			String propName )
	{
		
		if ( element == null || propName == null )
			return null;
		
		
		if ( element.getPropertyDefn( propName ) == null )
			return null;
		
		
		List propertyBindings = getListProperty( this, PROPERTY_BINDINGS_PROP );
		if ( propertyBindings == null )
			return null;
		for ( int i = 0; i < propertyBindings.size( ); i++ )
		{
			PropertyBinding propBinding = (PropertyBinding) propertyBindings
					.get( i );
			BigDecimal id = propBinding.getID( );
			if ( id != null
					&& propName.equalsIgnoreCase( propBinding.getName( ) )
					&& getElementByID( id.longValue( ) ) == element )
				return propBinding;
		}