Get i18n via translatewiki rolling

[kghbln]

• Add repo to user group with push rights
• Review "en.json" and extend "qqq.json"
• Create pull to add extension to twn

[kghbln]

This issue is for tracking this task. I believe doing so is premature at the moment. Just ping once we are ready to get translations.

[malberts]

We should definitely get #335 done first.