Explain why translations in Django repository are not synchronized with transifex

[TheProdigyFilippo]

Django repository has not actual translations. It looks like it's not synchronized with transifex in any manner. For example this .po file: ​https://github.com/django/django/blob/master/django/contrib/auth/locale/pl/LC_MESSAGES/django.po
was last updated almost a half year ago and it gives bad translation. In transifex some sentences are translated correctly.

[Tim Graham]

Claude, on a related note, it would be great to document the process of how to integrate translations from Transifex as well as the schedule for doing so (e.g. a checklist item on docs/internals/howto-release-django.txt for a new major release). Then we'll have something to point to that explains why translations on master are "outdated" like this.

[Claude Paroz]

Here's what we could add at the bottom of ​https://docs.djangoproject.com/en/1.7/internals/contributing/localizing/#translations :

Beware that translations from Transifex are only integrated into Django's source
code at the time of new major releases. We try to update them a second time
during one of the first minor releases, but that depends on the translation
manager's availability. So don't miss the string freeze period (between the
release candidate and the first major release) to take the opportunity to
complete and fix the translations for your language!

I'll let you rephrase it in better English!

About documenting the integration process, it's both simple and complicated. Simple because theoretically, it's a simple command (python scripts/manage_translations fetch), providing you have an account on Transifex, and then commit the changed/added files (both .po and .mo). Complicated because there are often validation errors for which you have to debug the causes and sometimes contact translators. I trust you about writing something based on the information above.

[Tim Graham <timograham@…>]

In 6704b5298035d3041b9bc14b72e9a2858fef513f:

Fixed #24269 -- Added docs about the process of managing translations in Django.