Bug 900182 - Pseudolocalizations for developer builds. r=gandalf
Bug 1013175 - Descriptive error messages in l10n.js. r=gandalf
use window.onlanguagechange instead of mozSettings
Merge pull request #24 from zbraniecki/1013929-switch-to-onlanguagechange

Bug 1013929 - Use the languagechange event instead of a mozSettings observer. r=stas
remove support for nested attributes