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?
So it turns out it doesn't work with just a config setting, it has to go in routes.rb. Anyway, this won't change anything for development as long as you don't set `RAILS_RELATIVE_URL_ROOT`