yiisoft/yii2 — pull request #2119 by samdark (2014-01-23 00:51:45+00:00)
Title: Fixes #2079

- i18n now falls back to `en` from `en-US` if message translation isn't found
- View now falls back to `en` from `en-US` if file not found
- Default `sourceLanguage` and `language` are now `en`