Subdir

Allows us to host the app on a subdirectory.

This will be /employment-tribunals. Or whatever's set as RAILS_RELATIVE_URL_ROOT.

Unfortunately we have a bunch of static links in our locale file. Is it rendered anywhere i.e. can we use the environment variable somehow?
Maybe, but I don't think it's possible without having the config in two places. e.g. having a list of routes in this file and in nginx's config.