Add a SymfonyCache Adapter

Remove prefix

Add missing filesystem dependency

Update email addresses

Fix feedbacks

Add allowed Symfony cache types + PHP code cache clear option

Fix @rande PR feedbacks

Rename directory before removing it

Add a random uniqid()
Merge pull request #63 from eko/master

Add a SymfonyCache Adapter
Merge remote-tracking branch 'sonata-project/master'

Conflicts:
	composer.json