Add "advanced pipeline", missing value, imputing module, maybe more

So this is an ambitious goal, with some moving parts. We need to reevaluate depending on how fast we progress with other things.

This does not really fit in any existing module and this seems to long to put it in module 1.

Here are a few things that we could show:
- advanced pipeline: as currently in the wrap-up quiz 1. **Need more details.** I think it had to do with multiple levels of nesting inside the pipeline
- missue value imputing