Allow `name` option in configuration file

Suite name is not logged anymore, it is an event emitted by the Runner
Add `toString` method to Runner
Correct plugins after major index file refactor
Fix exit code on failure
Fix logging trace left on feature failure
Make `--version` option more easily parsable

Make `--help` message give the reference URL
Switch success exit code test to DuckDuckGo instead of Advanced Matchers

Faster
Add "too many arguments" exit code test