Tweaks to CrowdPee: a better tweet and nicer results

I've just made a couple of tweaks to CrowdPee:

• The tweet sent to request information from Twitter users has changed. It now says: Hi! Could you answer three quick questions about the toilets at (location)? (url) Thanks! Hopefully this will be less confusing.
• Results are now available to download in CSV and JSON format, as well as a slightly prettier HTML table.