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
String propName )
	{
		
		if ( element == null || propName == null )
			return null;
		
		
		if ( element.getPropertyDefn( propName ) == null )
			return null;
		
		
		List propertyBindings = getListProperty( this, PROPERTY_BINDINGS_PROP );
		if ( propertyBindings == null )
			return null;
		for ( int i = 0; i < propertyBindings.size( ); i++ )
		{
			PropertyBinding propBinding = (PropertyBinding) propertyBindings
					.get( i );
			BigDecimal id = propBinding.getID( );
			if ( id != null
					&& propName.equalsIgnoreCase( propBinding.getName( ) )
					&& getElementByID( id.longValue( ) ) == element )
				return propBinding;
		}
		return null;
	}
	/**
	 * Gets all the defined property bindings for the given element. Each one in
	 * the list is instance of <code>PropertyBinding</code>.
	 *