Setting Up Sandbox for Localization Test

To do a test with dark lang use the update_lang url as shown here: http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/internationalization/i18n.html#coverage-testing

This is sufficient for both testing coverage (using language eo) and RTL (using rtl)

if you need to release languages, for example to test browser recognition when users are not logged in, see https://github.com/edx/edx-platform/wiki/Internationalization-and-localization#releasing-a-language