Core reference and Libraries reference entries share the same template

Because there's a single template to build all of the reference pages, the Library reference pages have the wrong left-nav option selected (Reference and not Libraries). Also, they can't have a custom message at the top of the page about the Javadoc. I think this requires digging into java-generate and rebuilding the Java classes.

In addition, the non-core Libraries from the Processing Foundation (Video and Sound) can't have a separate header message. They link to the Libraries Javadoc, but the code isn't there. Thinking about this more, we could probably build those Javadocs and add them while the rest are built.

Commencez par examiner le template partagé des pages de référence et le point d’entrée java-generate mentionné dans l’issue, puis suivez la manière dont les classes Java sont reconstruites. Le travail est terminé lorsque les pages Library sélectionnent Libraries dans la navigation de gauche, prennent en charge les messages Javadoc personnalisés et que les pages Video et Sound gèrent leurs liens Javadoc ou leurs Javadocs générés comme prévu.