Add proxy headers to nginx test server config
Set the default port to 8000

It's handy to be able to run the app under the perl debugger, rather
than under starman. Setting the port to the same one that we use with
starman means that we can connect to the app directly or via the nginx
proxy.
Make the WTSI/Cam and WTSI/UCL logos smaller
Add perl init script for starman and nginx

These are Daemon::Control scripts for controlling the two server
processes that run the website. They can be used to generate
LSB-compliant init script which can then be dropped into /etc/init.d.