Move static files and other things from old website

[stefandesu]

https://github.com/gbv/coli-conc.gbv.de contains several other things that are not included here yet.

• [x] Everything under /publications/
• [x] Access to registries under /registry/
  • [x] /registry/ page itself
  • [x] The page is not linked anywhere! Include a link in Services.
  • [x] We might be able to replace the api.php with static files . -> see comments below!
• [x] /rvk/ page
• [x] GND service (this might require a webserver that supports PHP)
• [x] Things from /terminologies/ (?)
• [x] Downloads for certain static files (e.g. KOS types, etc.)
• [x] /concordances/gnd/
• [ ] /concordances/wikidata/
• [x] /ccmapper/

There are likely more things missing here, so before we can publish this site to our domain, we should carefully go through everything (@nichtich).

[stefandesu]

Unfortunately, I don't think we can replace the registries under /registry/ with static files. While it is possible for Eleventy to generate those files (see here in a separate branch), they won't have a content type because they don't have a file extension. We might still choose to go this path, but we would need to rewrite the content type somehow via .htaccess or something.

[nichtich]

The information at /registry/ is harvested via a cron job anyway, so better create a small repository coli-conc-registries with documentation and a web application that is served under /registry/ via HTTP proxy.

[stefandesu]

I also added a Dependencies on Other Services section to the README.

[stefandesu]

@nichtich: Could you add the remaining /concordances/wikidata/ page and take another look if there's anything else missing, in particular any static files? I added the missing files that were linked under Publications, so those should all be there. I didn't copy all the files over though because they didn't seem necessary anymore.