References to DLS beamlines outside of config files

There are references to DLS beamlines outside of the config files. For example:

```
$ fgrep -Ilr i02 . | grep -Ev '(config|README)'
./api/includes/pages/class.fault.php
./api/includes/pages/class.pdf.php
./api/includes/pages/class.stats.php
./api/includes/pages/class.status.php
./api/includes/pages/class.vstat.php
./client/js/templates/status.html
./client/js/templates/status/status.html
```

Searching for `i03` and `i04` find similar locations.

This makes it harder to deploy at another site because changes need to be made in more places than just the config files.