Move admin guide to ReadTheDocs for this project

[jpmckinney]

• [x] https://docs.google.com/document/d/1iMxMEheQw3656Lxi4d9zZ01KR536EnBhqJFLvzNpfrw/edit

[jpmckinney]

• System diagram: https://app.diagrams.net/#G1bFbyop37OwbLrhbPaGbLUL6_TWkBs6GH. Add filesystem to diagram
  • The file was named "Data Registry system diagram" but it was deleted. I have a vague memory of drawing this. However, I think it's possible I abandoned it, because it got into too much detail about dependent services.
• Consider a terminology page for Scrapy, Scrapyd, Kingfisher Collect, etc. as orientation
  • I think it's easy enough to read the linked docs.

[jpmckinney]

@yolile Should we move part of https://docs.google.com/document/d/12d61HXZaD3wBYN479ShfZmc0xW29fJvmGNhkyf4xUhg/edit to the docs, too?

[yolile]

Yes, I think we could include the steps about adding a new publisher