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/core/Module.java
module.attributeListeners = null;
		module.disposeListeners = null;
		module.resourceChangeListeners = null;
		module.elementIDCounter = 1;
		module.fatalException = null;
		module.idMap = new HashMap( );
		module.moduleNameSpaces = new IModuleNameScope[NAME_SPACE_COUNT];
		module.nameSpaces = new NameSpace[NAME_SPACE_COUNT];
		module.nameManager = new NameManager( module );
		module.referencableProperties = null;
		module.saveState = 0;
		module.systemId = null;
		module.translations = (TranslationTable) translations.clone( );
		module.validationExecutor = new ValidationExecutor( module );
		module.validationListeners = null;
		assert module.getID( ) > NO_ID;
		assert module.getElementByID( module.getID( ) ) == null;
		module.addElementID( module );
		
		for ( int i = 0; i < NAME_SPACE_COUNT; i++ )
		{
			module.nameSpaces[i] = new NameSpace( );
			module.moduleNameSpaces[i] = ModuleNameScopeFactory
					.createElementNameSpace( module, i );
		}
		
		if ( theme != null )
			module.theme = new ElementRefValue( theme.getLibraryNamespace( ),
					theme.getName( ) );
		else