Labels and text used by the server application are defined for the default language English ("en") in /config/locales.
Specifically there are 2 files:
General labels, inluding email subjects for email reminders due_date_mailer
and API website sitewide_header
: /config/locales/en.yml
Email text, including for password reset instructions reset_password_instructions
:
Translation files to other languages can be added. For details please see http://guides.rubyonrails.org/i18n.html