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?
I've seen worse paths :-P

We can't just forward everything in nginx on the root dir because we're sharing the hostname with what's already live. Basically, this is the least bad way to do it.