Show section language on pop-up when creating new article

Created on behalf of José Luis' post here

Issue: section selection/distinction is not intuitive if we have multiple Guide sections with the same title but across different languages. 

When creating a new article in Guide, and choosing its Section, it would be useful to have a visual reference to the language that section belongs to.

Alternatively, the pop-up would only show categories and sections published under the same language the new article is being created in.