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/DefaultResourceLocator.java
return null;
		URL systemId = moduleHandle.getModule( ).getSystemId( );
		if ( systemId == null )
			return null;
		try
		{
			url = new URL( systemId, URIUtil
					.convertFileNameToURLString( fileName ) );
			if ( isGlobalResource( url ) )
				return url;
			return tryLocalResourceSearch( url );
		}
		catch ( MalformedURLException e )
		{
			
		}
		return null;
	}
	/**
	 * Tests if the url indicates a global resource.
	 * 
	 * @param url
	 *            the url to test
	 * @return true if the url indicates to a global resource, false otherwise.
	 */
	private boolean isGlobalResource( URL url )
	{
		if ( URIUtil.FTP_SCHEMA.equalsIgnoreCase( url.getProtocol( ) )
				|| URIUtil.HTTP_SCHEMA.equalsIgnoreCase( url.getProtocol( ) ) )
			return true;