Improve structure and content of skohub.io

[acka47]

...as planned in the last MI organisation meeting. Might be related to #19 .

[acka47]

We collected some problems and ideas today in this pad: https://pad.lobid.org/skohub-webseite?both

Next step: Open a PR with "small fixes" and updated text for skohub.io

[sroertgen]

Small fixes

• [X] make reconcile beta
• [X] Discourse link auf metadaten.community zeigen lassen
• [X] "Status: inactive" for editor, pubsub and extension (possibly under a separate heading collapsed with <details> tag)
• clearly show that reconciliation service is a demo application (probably also in URL)
• [X] add shape repo to web page
• Remove repos?
  • https://github.com/skohub-io/skohub-validate
  • https://github.com/skohub-io/metadata-profiles
  • https://github.com/skohub-io/vocabs-monitoring
• [X] name for skohub-docker-vocabs repo could be improved. Ideas: skohub-vocabs-serverless, skohub-vocabs-pages

Update text

What should the text focus on:

• SKOS publication made easy (short description of SKOS and where it is used)
• Features:
  • "serverless" setup
  • machine- and human-readable
  • git-based editorial workflows
• Example vocabularies
  • kerndatensatz forschung https://w3id.org/kdsf-ffk/
  • Hochschulfächersystematik: https://w3id.org/kim/hochschulfaechersystematik/scheme
• Get started in three steps: fork, edit, publish
• Additional options/features:
  • Run your own SkoHub
  • Set up Reconciliation Service API for your repo
• Reference implementations/users
  • wlo, oersi, tib, kim, iqb,...