[Evergreen-general] Adding a language to the dropdown which enables translation from within the staff client

[Linda Jansová]

Hi,

We have just upgraded our production server to Evergreen 3.13 and it 
seems that, for some reason, we only see English (US) as a single 
language in the dropdown in the translation interface.

E.g., when a consortium name should be translated, one can go to 
https://bugsquash.mobiusconsortium.org/eg2/cs-CZ/staff/admin/server/actor/org_unit, 
click on the translation icon and then select the appropriate language 
in the pop-up. (It looks correct on Blake's server.)

There must be a setting somewhere that makes the language appear in the 
dropdown but I haven't been able to locate the right spot...

Thank you for any hints!

Linda