Suggestions on how to improve translations

@cshold Trying to set the best example possible for designers, we should always translate whole phrases. 

So we should translate 'Logged in as [name]' instead of 'Logged in as'. See commit: https://github.com/Shopify/Timber/commit/b15d436c813d207007cc1b5d47933a987c55d7b0
Does this need to be named `_html` if no markup is being used in the string?