Editing: "it" entries in meta.json files for chart visualizations
Editing: new Italian item in languages dropdown menu
Fixing: datawrapper-backend-1.2.6.min.js instead of datawrapper-backend-1.2.9.min.js in admin dashboard
Merge branch 'bugfix/datawrapper-backend-js' into translations/it_IT
Editing: italian translation of activation email