Translate "How to interpret phylogenetic trees" to Dutch

We’d like to translate “How to interpret phylogenetic trees” into Dutch. This narrative is referenced in the latest hCov-19 report, and we hope it will help make that one and future situation reports more accessible. The file to translate is ncov_trees-background_nl.md in branch background_nl under the narratives folder: https://github.com/nextstrain/ncov/blob/background_nl/narratives/ncov_trees-background_nl.md

After pushing your changes to GitHub, you can preview the translation here: https://nextstrain.org/community/narratives/nextstrain/ncov@background_nl/trees-background/nl/

Please add your name in parentheses to the end of the author list, so we can credit your work!

Since this narrative explains something more technical, it would be great if the phylogenetics experts can keep their eyes especially on this translation 😃

If more than one of you are working on the document at a time feel free to use a live, online editor like hackmd (sign in with GitHub) to work. The French translation group has found this especially helpful, whatever works best for you.

As always, THANK YOU! It’s an honor to work with you all.

@roanvanscheppingen, @rvosa, @Van-Doorslaer, @pleunipennings, @JSHuisman, @JiscaH, @shenii

[JSHuisman]

Just finished - it seems quite ready (at least from a phylogenetics perspective the explanations make sense)

[roanvanscheppingen]

Some edits:

Added Dutch translation of the first page Added Dutch translation of the alternative texts (for the other Dutch people, this is the description of a picture, for the visually impaired people using reading software!) Some spelling errors Changed some wording

(I looked purely at the text, not at the narrative with the text next to it. I’ll do that later, or someone else!)