Allow to configure locale path and incubating languages

doc/admin/config.rst

@@ -273,6 +273,24 @@ to speed up various operations::
 If redis is not configured, pretix will store sessions and locks in the database. If memcached
 is configured, memcached will be used for caching instead of redis.
 
+Translations
+------------
+
+pretix comes with a nubmer of translations. Some of them are marked as "incubating", which means
+they can usually only be selected in development mode. If you want to use them nevertheless, you
+can activate them like this::
+
+    [languages]
+    allow_incubating=pt-br,da
+
+You can also tell pretix about additional paths where it will search for translations::
+
+    [languages]
+    path=/path/to/my/translations
+
+For a given language (e.g. ``pt-br``), pretix will then look in the
+specific subfolder, e.g. ``/path/to/my/translations/pt_BR/LC_MESSAGES/django.po``.
+
 Celery task queue
 -----------------
 

src/pretix/settings.py

@@ -378,9 +378,11 @@ USE_I18N = True
 USE_L10N = True
 USE_TZ = True
 
-LOCALE_PATHS = (
+LOCALE_PATHS = [
     os.path.join(os.path.dirname(__file__), 'locale'),
-)
+]
+if config.has_option('languages', 'path'):
+    LOCALE_PATHS.insert(0, config.get('languages', 'path'))
 
 FORMAT_MODULE_PATH = [
     'pretix.helpers.formats',
@@ -407,7 +409,7 @@ LANGUAGES_OFFICIAL = {
 }
 LANGUAGES_INCUBATING = {
     'pt-br', 'da', 'pl', 'it', 'el'
-}
+} - set(config.get('languages', 'allow_incubating', fallback='').split(','))
 
 if DEBUG:
     LANGUAGES = ALL_LANGUAGES