Language codes are case-sensitive

Currently, language codes are case sensitive. If an app has a translation with en-US, it won't be shown by Django to a user who has this in their ACCEPT_LANGUAGES, because Django lower-cases all language codes and en-us != en-US.

From https://docs.djangoproject.com/en/1.11/topics/i18n/#term-language-code

Examples: it, de-at, es, pt-br. Language codes are generally represented in lower-case, but the HTTP Accept-Language header is case-insensitive.

When working on this, it might be useful to add something like this to the settings to make American English a supported language:

from django.conf import global_settings
LANGUAGES = [('en-us', 'American English')] + global_settings.LANGUAGES

mentioned in merge request !134 (merged)

changed the description

Discussion about this at the dev meeting: https://botbot.me/freenode/fdroid-dev/2017-07-13/?msg=88517124&page=1

added Doing label

assigned to @grote

marked this issue as related to #126 (closed)

closed via merge request !134 (merged)