As far as we can tell, this routes are not done in ngnix. So this middleware will only be necessary in development. In this commit I am only moving this out of production so we can make sure everything still works, and I will follow up in a next commit to make the Hostess middleware a way simple class.
As far as I can tell heroku_asset_cacher is not used in here, and not sure if it works on rails 4+, so we can just remove it for now
We actually wanna see the top level error so we can track it better, and ignore a few top-level ones. see the conversation in here honeybadger-io/honeybadger-ruby#107 (comment)