No special syntax highlighting for common identifiers

This is a bit of a bikeshed issue, but I’d like to raise it anyways. Feel free to close without much discussion if you disagree.

Currently, CodeWorld syntax highlighting highlights names that happen to be defined in the prelude library (`Double`, `True`) different that names from other libraries (`Event`, `Picture`) or custom-defined things. Similar for function (e.g. `id`).

I generally disapprove of this approach, as it hides the fact that even the Prelude is just a library, and that `Double` and `Event` are both types of their own right. The difference between the two is not worth this distinction, and the type of, say `interactionOf`, looks bad with these types printed differently.

Also, the `Prelude` changes over time, making this highlighting inconsistent.

I’d like to see no special highlighting of predefined identifiers.

Commencez par localiser le point d’entrée de la coloration syntaxique de CodeWorld ainsi que la logique qui distingue les identifiants de Prelude des noms fournis par d’autres bibliothèques ou par le code utilisateur. Supprimez la coloration spéciale des identifiants prédéfinis, puis vérifiez que les types et les fonctions tels que Double, True, Event, Picture et id reçoivent le même traitement que les autres identifiants.

Rédigé par le modèle d'indexation à partir du texte de l'issue.