Integrate learning paths into simulator interface

[tomneutens]

Since we have an api offering learning paths, it would not be an unthinkable amount of work to integrate these into the blockly interface. That way, we can track which assignments learners perform and which content they use the most. It would also allow us to add interactivity to the learning objects (f.e. quizzes).

This feature might add a lot of value in a relatively short period of time.