Fix the bug introdiced in PR #866, where the $format was never set.
handle StopFormatListenerException in the ExceptionController
make it possible to configure the ExceptionController without the TwigBundle
Merge pull request #897 from mvrhov/fix_866

Fix the bug introdiced in PR #866, where the $format was never set.
Merge pull request #908 from FriendsOfSymfony/exception_controller

Exception controller
Merge remote-tracking branch 'FOS/master'