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
return (SharedStyleHandle) style.getHandle( module );
	}
	/**
	 * Finds a style by its name in this module and the included modules.
	 * 
	 * @param name
	 *            name of the style
	 * @return a handle to the style, or <code>null</code> if the style is not
	 *         found
	 */
	public SharedStyleHandle findStyle( String name )
	{
		StyleElement style = module.findStyle( name );
		if ( style == null )
			return null;
		return (SharedStyleHandle) style.getHandle( style.getRoot( ) );
	}
	/**
	 * Finds a theme by its name in this module and the included modules.
	 * 
	 * @param name
	 *            name of the style
	 * @return a handle to the style, or <code>null</code> if the style is not
	 *         found
	 */
	public ThemeHandle findTheme( String name )
	{
		Theme theme = module.findTheme( name );
		if ( theme == null )
			return null;