Update requirements
Bugfix since the update of flot tooltip : %y is not processed for pies.
typo
Allow complex urls with more than one user_id (e.g. `/user/288-1424`).
Ajax error handling: redirect to the home page.

+ adapt the code for jquery 1.8 (use $(document)).
Error handling improvements.

- log and flash the true error message from the parser
- return with a 500 code so that the ajaxError callback is used
- translate messages in french
refactor