Empty profile listener
Code style improvements and added spec
Merge branch 'empty-profile-listener' of github.com:kreta-io/kreta into empty-profile-listener

Conflicts:
	src/Kreta/Bundle/WebBundle/EventListener/EmptyProfileListener.php
	src/Kreta/Bundle/WebBundle/spec/Kreta/Bundle/WebBundle/EventListener/EmptyProfileListenerSpec.php