Space for proofreaders / reviewers

### Description
If enabled, Display proofreaders (reviewers) for each languages on project #information area.
e.g. https://hosted.weblate.org/projects/aurora-store/#information (it can be set to expand / collapse for save space or reduce page default length)

Benefits:
1. For translators - Easy to contact language experts, discuss issues, share knowledge etc
2. For administrators - Contributors will contact their locale manager / reviewer first for any localization related issues. Also, this helps to remove external language team / managers / reviewers pages
https://translations.documentfoundation.org/
e.g. https://wiki.documentfoundation.org/Language_Teams

(credits: transifex)