Movement overview timeline on start page

[mauamy]

Is your feature request related to a problem? Please describe.
The user has no overview of the different movements an their chronological order.

Why do you want this feature? What goals should be achieved
Teach users the context of time and art movements.

Describe the solution you'd like
Adding an overview timeline containing (the most important) movements which are not a sub-movement to the start page.
This information can be acquired by the wikidata dataset. An empty is part of field indicates
that the movement is not a sub-movement itself.

In the future it might be possible to add more movements (even sub-movements). But this depends on how this will blow up the start page.

Describe acceptance criteria
A timeline on the start page shows a few different important movements in chronological order.

Describe alternatives you've considered
None

What effects does your proposed solution have
We need to crawl more fields of the wikidata dataset and change the model.

This issue is closely coupled to issue #65.
Therefore the newly required data should be equal for both features.

Additional context

[EeveesEyes]

This is not even started yet