GitLab

* add Interlingua (ia)

* add Egyptian Spoken Arabic (arz)

Used to query user's emails.

Mostly used for administration, to see if a user requesting something is who they say.

Also, some people assume that the admin knows this data, and says things like:
"If you could do _____ with the account connected to this email".

It'd be nice if we could do that without raw SQL.

This reverts commit a2fb1f5f.

This reverts commit 038fbddd.