text: {% comment %}
  Loops through all reviewer, translator, and translation editor data to create an acknowledgement sentence. This is used both on project-team.md as well as es/equipo-de-proyecto.md
  {% endcomment %}
  
  {% assign alllessons = site.pages | where: "lesson" , "true" %}
  
  {% assign reviewers = alllessons | map: "reviewers" %}
  {% assign editors = alllessons | map: "editors" %}
  {% assign translators = alllessons | map: "translator" %}
  {% assign translation_editors = alllessons | map: "translation-editors" %}
  {% assign translation_reviewers = alllessons | map: "translation-reviewer" %}
  
  {% assign allpersons = reviewers | concat: editors | concat: translators | concat: translation_editors | concat: translation_reviewers %}
  
  {% assign contributors = allpersons | compact | uniq %}
  
  {{ contributors | join: ", " }},