Move nginx client cert config to top of file
Move nginx client cert config to top of file

Per http://osdir.com/ml/nginx/2010-11/msg00119.html , moving the config
line slightly higher prevents nginx from just dropping every request.

It would have been nice to to have discovered this behavior through hours
of experimenting and eventually searching the web, but I am happy to have
this commit.

sandstorm-io/sandcats,sandstorm-io/sandcats,sandstorm-io/sandcats,sandstorm-io/sandcats