uPortal2 stylesheets and runtime behavior support.
{@link org.jasig.portal.rendering.sax.xslt.legacy.LegacyStylesheetDescription} extends stylesheet description with all extra information
available in the uportal2 stylesheet description files.
{@link org.jasig.portal.rendering.sax.xslt.legacy.ITransformationFilterLegacyCommands} describes a set of uPortal2 commands that affect
transformer preferences. A url constructor implementation ({@link org.jasig.portal.rendering.sax.xslt.legacy.TransformationFilterLegacyCommandsUrlConstructor})
and a direct parameter processor implementation ({@link org.jasig.portal.rendering.sax.xslt.legacy.TransformationFilterLegacyUrlParameterProcessor}) are provided.