Bug 1083159 - [Loop] Issues reported in Loop locales that need to be fixed before Localization teams starts working

I would expose a `Branding.translate`  with the second part of this equal, in order to reuse it in the rest of the code (for example https://github.com/mozilla-b2g/firefoxos-loop-client/pull/204/files#diff-ceb739c986db75454cd0d5c8f22f2928R188 and so on)