TODO
* add Format choice in ICal feed if asked
* add test with Test::WWW::Mechanize
* add links from the calendar page
ALREADY DONE
* (chaka) add a personnal calendar with a saved query
* (ymmv) ICal feeds
* (chaka) put the results of a Query Builder search on a calendar
* (chaka) link from MyCalendar should automatically go to Calendar.html with filter set to Owner=CurrentUser