Sorry for website disruption

I apologise if you have visited the website today and experienced some error messages or disruption. I have migrated from ad-hoc scripts to a Django-based application. Turned out that my local test environment wasn't configured exactly the same way as the server. Things should work again now.

Actually Google AppEngine have some versioning support which should allow us to avoid issues like this when upgrading a live site. Perhaps I will remember to use this next time!