Improve documentation: order in INSTALLED_APPS matters for translations and templates

[stefano.crosta@…]

The order of applications in INSTALLED_APPS matters for priority/overriding of at least:

• templates: ​https://docs.djangoproject.com/en/dev/ref/templates/api/#django.template.loaders.app_directories.Loader
• translations: ​https://docs.djangoproject.com/en/1.5/topics/i18n/translation/#how-django-discovers-translations

Mailing list discussion: ​https://groups.google.com/forum/#!topic/django-developers/r37clRaXgf4

My proposal is to add a box in ​https://docs.djangoproject.com/en/dev/ref/settings/#installed-apps saying something like:

The order of INSTALLED_APPS is significant! Translations and Templates in Django can be overridden; the first app found will have priority. Please also see ​Templates Documentation and ​Translations Documentation

An alternative method is to use ​https://pypi.python.org/pypi/django-apptemplates/ that allows to override (and inherit) the template of a specific app.

[Aymeric Augustin]

Related to #21018.

[Aymeric Augustin]

See ​https://github.com/django/django/commit/0ce945a67151acf2c58bc35a47f4c3d45ff30085#diff-7432e7141e58a9eede9760904be4b14cR1319 — is it enough to consider this ticket fixed?

[Tim Graham]

Looks good to me.