OMG avevi ragione!!
L’avevo anche io e vedo che il repository Git reindirizza anche a https://github.com/discourse/discourse-post-voting !! 
Ma aspetta… topic-voting E q&a fusi in post-voting? Le funzionalità si accumulano?
Quindi ecco la mia ultima lista di plugin:
hooks:
after_code:
- exec:
cd: $home/plugins
cmd:
- mkdir -p plugins
- git clone https://github.com/discourse/docker_manager.git
- git clone https://github.com/discourse/discourse-openid-connect
- git clone https://github.com/discourse/discourse-solved
- git clone https://github.com/discourse/discourse-yearly-review
- git clone https://github.com/discourse/discourse-checklist
- git clone https://github.com/discourse/discourse-docs
- git clone https://github.com/discourse/discourse-reactions
#- git clone https://github.com/discourse/discourse-feature-voting
- git clone https://github.com/discourse/discourse-calendar
#- git clone https://github.com/discourse/discourse-gamification
- git clone https://github.com/discourse/discourse-gamification && cd discourse-gamification && git checkout 6a399b4c220f31de62049504d27ff6e50611fbef
- git clone https://github.com/discourse/discourse-follow
- git clone https://github.com/discourse/discourse-spoiler-alert
- git clone https://github.com/paviliondev/discourse-news
- git clone https://github.com/cfstras/discourse-konami.git
#- git clone https://github.com/discourse/discourse-question-answer
- git clone https://github.com/discourse/discourse-post-voting
Discourse risponde finalmente.
Ma ora altri problemi:
- L’amministratore dei plugin mostra “domande e risposte”…
- Quando creo un argomento, il menu delle voci non è corretto:
- La configurazione nelle impostazioni della categoria mostra sempre q&a
Quindi sembra che q&a sia sempre presente…