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
}
	/**
	 * Sets symbolic name of this module. This property is needed when search
	 * resources in fragments. Usually it should be the plug-in id of the host
	 * plug-in.
	 * 
	 * @param symbolicName
	 * @throws SemanticException
	 */
	public void setSymbolicName( String symbolicName ) throws SemanticException
	{
		setStringProperty( SYMBOLIC_NAME_PROP, symbolicName );
	}
	/**
	 * Returns the system id of the module. It is the URL path of the module.
	 * 
	 * @return the system id of the module
	 */
	public URL getSystemId( )
	{
		return module.getSystemId( );
	}
	/**
	 * Removes special script lib.
	 * 
	 * @param scriptLib
	 *            script lib
	 * @throws SemanticException
	 */
	public void dropScriptLib( ScriptLib scriptLib ) throws SemanticException