Don't log to stdout in dev and test env
Be explicit about canceling action
Destroy! raises an error when it fails
Cosmetics and remove useless code
Wrap transactional operations into a SQL transaction
Use fetch to fail when a key is not present
Refactor Tag Create and Destroy
User is automagically logged in when it goes to a page that requires authentication
Merge pull request #32 from pcreux/phi

Improved a few things here and there