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
public static final int ELEMENT_NAME_SPACE = 1;
	/**
	 * Identifier for the parameter name space.
	 */
	public static final int PARAMETER_NAME_SPACE = 2;
	/**
	 * Identifier for the data source name space.
	 */
	public static final int DATA_SOURCE_NAME_SPACE = 3;
	/**
	 * Identifier for the data set name space.
	 */
	public static final int DATA_SET_NAME_SPACE = 4;
	/**
	 * Identifier for the master page name space.
	 */
	public static final int PAGE_NAME_SPACE = 5;
	/**
	 * Identifier for the theme name space.
	 */
	public static final int THEME_NAME_SPACE = 6;
	/**
	 * Identifier for the template parameter definition name space.
	 */
	public static final int TEMPLATE_PARAMETER_NAME_SPACE = 7;
	/**
	 * Number of defined name spaces.
	 */
	public static final int NAME_SPACE_COUNT = 8;
	/**