specify if new translations to django core can be made in project directory

[Arthur Hebert]

On the documentation page, ​http://docs.djangoproject.com/en/dev/topics/i18n/localization/, under the title "Locale Restrictions," it says:

If you want to support a locale for your application that is not already part of Django, you’ll need to make at least a minimal translation of the Django core.

A good starting point is to copy the Django English .po file and to translate at least some translation strings.

The text should indicate if the new language .po file may be copied to the project directory, or if it needs to be copied to the Django core source directory (e.g. <python-path>/django/conf/locale/).

[Ramiro Morales]

I will close this as a duplicate of #14461. When that ticket gets solved to not require putting new files under the Django tree to extend the choices of available locales, the respective modifications to the documentation should be included.