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
* @param listener
	 *            the dispose listener to remove
	 * @return <code>true</code> if <code>listener</code> is successfully
	 *         removed. Otherwise <code>false</code>.
	 * 
	 */
	public boolean removeDisposeListener( IDisposeListener listener )
	{
		return getModule( ).removeDisposeListener( listener );
	}
	/**
	 * Removes one resource change listener. If the listener not registered,
	 * then the request is silently ignored.
	 * 
	 * @param listener
	 *            the resource change listener to remove
	 * @return <code>true</code> if <code>listener</code> is successfully
	 *         removed. Otherwise <code>false</code>.
	 * 
	 */
	public boolean removeResourceChangeListener(
			IResourceChangeListener listener )
	{
		return getModule( ).removeResourceChangeListener( listener );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.DesignElementHandle#drop()
	 */