Bug 152828 Add the projectFolder property on module
When user doesn't set the resource folder path in designer, there should be a default working path for Birt to manage the report design and find the related resources. A new property should be added on Module: name: projectFolder type:URL This property only can be given from the open design method from session but should not be set after the module initialized. Concern about the backward compatiblity issue, a new method will be added. Open design with a config argument.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* of <code>AttributeEvent</code> to all the attribute listeners
	 * registered in the module.
	 * 
	 * @param newName
	 *            the new file name. It may contain the relative/absolute path
	 *            information. This name must include the file name with the
	 *            filename extension.
	 */
	public void setFileName( String newName )
	{
		getModule( ).setFileName( newName );
		if ( !StringUtil.isBlank( newName ) )
		{
			URL systemId = URIUtil.getDirectory( newName );
			if ( systemId != null )
				getModule( ).setSystemId( systemId );
		}
		AttributeEvent event = new AttributeEvent( module,
				AttributeEvent.FILE_NAME_ATTRIBUTE );
		module.broadcastFileNameEvent( event );
	}
	/**
	 * Sets an external file that provides help information for the report.
	 * 
	 * @param helpGuide
	 *            the name of an external file
	 */
	public void setHelpGuide( String helpGuide )
	{
		try