Support Jupyter Lab

[JoaoFelipe]

Jupyter Lab will not support display(Javascript(...)). It means that it is necessary to create alternatives for all the widgets that use javascript:

• ArticleNavigator uses Javascript to remove and reinsert cells. A possible solution is to create a Code widget instead of using actual Jupyter cells
• Graph uses Javascript to present zoomable graphs. A zoomable svg widget or a Jupyter lab mime extension could solve this issue