Transfer to new organisation PoplogArchive

[sfkleach]

• [x] Create new organisation PoplogArchive
• [x] Transfer poplogversions - low hanging fruit
• [x] Transfer over GetPoplog/poplogarchive
• [ ] Fix up the remote for poplogarchive.getpoplog.org:/var/www/poplogarchive/.git
• [ ] Transfer over the project repos
  • [ ] abbott
  • [ ] popracer
  • [ ] schema
  • [ ] examples
  • [ ] paradigm_lectures
• [ ] Add new repo PoplogArchive.github.io and populate with nice markdown & add style
• [ ] Remove archivist team from GetPoplog organisation (?)
• [ ] Transfer the PoplogArchive project over (actually requires recreating step-by-step)